The following outline and description of the ketubah is taken from the Chabad website. The writing is clear and concise and explains part, parcel, and purpose of every aspect of the ketubah.  Understanding is key to learning and a depth of understanding cannot always be accomplished by looking only at the surface.  and in all my research I have not found a better source for explaining the ketubah.  I have not quoted it because I have made multiple to the language of the text and added some small additional explanations.  However, credit must be given where credit is due.

Outline of the Ketubah

The Date and Place of the Wedding

“On the day_____ of the week, the_____ day of the month_____ in the year_____ since the creation of the world according to the reckoning which we are accustomed to use here in the city of__________ in__________”

The Date - The law prescribes that the date appear at the beginning in private agreements, but at the end in court agreements. Though the ketubah has the status of a court decree, it is in the nature of a private agreement and so the date is placed first.

The Place - The same rationale is used for the place. A divorce document contains more geographical information (e.g., mention of a neighboring river). The Sephardim retained this custom, and Rema, in the sixteenth century, urged that the technicalities of the ketubah follow those of the divorce. But the Talmud simplified the ketubah and the Jews of Europe have followed that tradition.

The Groom, the Bride and the Proposal

“_________son of_________ of the family__________ said to this maiden daughter of the_________ family_________ "Be thou my wife according to the law of Moses and Israel." 

The Names - Their Hebrew names, their fathers' names and usually, though not always, their family names. The mother's name is given when praying for recovery from illness, as a symbol of mother's compassion. A father's name is used in legal matters, just as a father's family name has always been used in legal affairs. Added to their names is also the appellation for a rabbinic scholar, Rav, or priestly (ha-Kohen) or Levitic (ha-Levi) descent.

The Proposal - "Be thou my wife according to the law of Moses and of Israel" is the marriage proposal. The ketubah, following in time as it does the betrothal and its oral proposal formula, "You are hereby betrothed unto me according to the law of Moses and Israel," is written by witnesses testifying that the groom in fact proposed to the bride. The formula has remained intact for some two thousand years. The Talmud considered variants, but this language of proposal endured.

The Groom Promised the Basic Support

"...and I will work for thee, honor, provide for, and support thee, in accordance with the practice of Jewish husbands, who work for their wives, honor, provide for and support them in truth."

Support - This is referred to as the alimentation clause. Providing support is elemental in marriage and is considered so obvious that the Talmud makes no reference to it. But the phrase is so beautiful and appropriate that it appears in the ketubah not only once but twice, "honor, provide for, and support... honor, provide for, and support...." Indeed, one authority described it as le'shufra di'she'tara (for the beauty of the contract).

Funds for the Wife If and When the Marriage Terminates

"And I will set aside for thee two hundred silver zuz mohar due thee for thy maidenhood, which belong to thee according to the law of the Torah, and thy food, clothing, and other necessary benefits which a husband is obligated to provide; and I will live with thee in accordance with the requirements prescribed for each husband."

The Funds - Called mohar, are so important that this clause is called ikkar ketubah - the basic part of the ketubah, or simply the ketubah.  Mohar is the cash gift the groom gives the bride, as Eliezer, Abraham's servant, gave "precious things" to Laban, Rebecca's father, and as Jacob gave seven years of service for the hand of Rachel. The great sage and the ketubah's most important author, Rabbi Simeon ben Shetach, decreed that this serve as protection for the bride rather than only a gift, and ordained that the funds were not given but set aside for the bride. During marriage, therefore, it was considered a debt which was paid only in case of death or divorce, and the mohar thus became a divorce or life insurance settlement rather than a mere marriage gift. This arrangement also enabled poor grooms to marry without any immediate monetary expenditure. The Talmud provides another reason, mishum china, to give the woman a secure financial position at the time of divorce so that she may remarry and make the trials of marriage less poignant.

The Law of the Torah - There is a running dispute between the Jerusalem Talmud and the Babylonian Talmud as to whether this settlement, which all agree is historically of biblical times, is biblically or rabbinically mandated. Today we generally take mohar to be rabbinically commanded, yet because of the gravity of the marriage bond we persist in using, "which belong to thee according to the law of the Torah." We also include "two hundred silver zuz," the Tyrean coin used in biblical assessments, rather than the "current" coin used in rabbinically-ordained payments.

Food, Clothing, and Conjugal Relations - The obligations are basic to marriage and are obligatory even without specific contractual condition. They are the rights (including conjugal relations) of the wife and are accounted duties of the husband.

The Bride Accepted the Proposal

“And__________ this maiden, consented and became his wife.”

Willing Acceptance - The proposal having been made in the traditional formula, the witnesses now assert that the bride accepted with willing consent, and therefore "she became his wife."

And She Brings a Dowry

“The dowry (nedunya) that she brought from her__________ house, in silver, gold, valuables, clothing, and household furnishings, all this__________ the said groom accepted in the sum of one hundred silver pieces.”

The Dowry - Nedunya (dowry), popularly referred to as naddan, is given the bride by her father for her use in the home she is about to build. This dowry includes the items listed plus any other valuables she may bring with her. In the Bible, Rachel and Leah are given servants Bilhah and Zilpah as dowry. It is the daughter's share of her parents' inheritance. The sons succeed their father, but the daughters leave him and therefore receive an equivalent in the form of dowry. The Sages make it compulsory for a father to give his daughter, as a start in married life, sufficient funds to buy a woman's wardrobe for one year.

The dowry is distinct from property or possessions that the bride owns and continues to own privately throughout marriage. Thus, it serves as an inducement for suitors. The dowry is included in the ketubah, and is the property of the bride, technically "leased" to the groom for the duration of marriage. The bride's private property, called nikhsei melog, is given outright to the bride, the husband enjoying only the "fruit" (usufruct) during marriage. It is not part of the dowry and is not included in the ketubah.

The Groom Accepted - The ketubah originally listed all items in the dowry and tabulated the cost. In time, this was standardized under the general categories listed and estimated at a standard sum of one hundred silver pieces, one half of the mohar that the groom provided the bride for use of the dowry, but which, in reality, comes today to very much more than the half mohar.

The Groom, in Turn, Promised an Additional Gift

“Adding on his own, mattan, another hundred silver pieces, kenegdan, making a total of two hundred silver pieces.”

Tosefet Ketubah / Mattan - The additional monies, known as tosefet ketubah or mattan, is the addition to the mohar.  This is the gift that the groom makes and that matches the dowry sum (one hundred silver pieces). The total of dowry estimate plus tosefet ketubah comes to two hundred silver pieces.

And Secured the Promise with a Lien on His Property

“And thus said________, the said groom: ‘I take upon myself, and my heirs after me, the surety of this ketubah, of the dowry, and of the additional sum, so that all this shall be paid from the best part of my property, real and personal, that I now possess or may hereafter acquire. All my property, even the mantle on my shoulders, shall be mortgaged for the security of this ketubah and of the dowry and of the addition made thereto, during my lifetime and after my lifetime from this day forever.’"

The Surety of This Ketubah - Rabbi Simeon ben Shetach made the ketubah into a note of indebtedness to protect the wife. He also introduced a guarantee that it would not remain merely a promise made in the flush of love, but a contractual obligation. The ketubah therefore includes a lien on the groom's property to secure the satisfaction of the triple obligation of mohar, nedunya, and tosefet ketubah, or as the ketubah reads, she'tar ketubta da, nedunya den, ve'tosefta da. A lien on the debtor's property (the groom's) means that the law considers the property as a sort of mortgage. It is a shibuda de'oraita, a lien that is a biblical mandate, even more than a simple mortgage. The lien of the ketubah obligates the husband personally and it is therefore not only a mortgage on his real estate, but also on "property, the best part... real and personal... the mantle on my shoulders... now... or hereafter... during my lifetime and forever."

And the Lien Is Fully Valid

“And the surety for all the obligations of this ketubah, dowry and the additional sum has been assumed by________ the said groom, with the full obligation dictated by all documents of ketubot and additional sums due every daughter of Israel, executed in accordance with the enactment of our Sages, of blessed memory. It is not to be regarded as an indecisive contractual obligation nor as a stereotyped form.”

Not a Stereotyped Form - To assure the legal effectiveness of the debt and the lien made at a moment of exhilaration and romantic expectation, and to prevent the ketubah from being considered a mere statement of love commitment, with no legal binding force, the Sages expressly affirmed, "It is not to be regarded as an asmakhta, an indecisive contractual obligation," a sort of speculation, or as a "stereotyped form," a routine rubber-stamp procedure.

Then Everything Was Sealed

“And we have completed the act of acquisition from________ son of________ of the family________ the said bridegroom, for________ daughter of________ of the family this maiden, for all that which is stated and explained above, by an instrument legally fit to establish a transaction. And everything is valid and established.”

The Act of Acquisition (Kinyan) - In order to seal all of the stipulated obligations, and to assure that the document is not asmakhta (based on speculation), the Rabbis required the legal formality of kinyan, the act of acquisition. Because the bride cannot take possession of all the property, the groom affirms it by a symbolic act called kinyan suddar.

Thus, at the wedding, the rabbi or one of the witnesses gives a handkerchief or other article (but not a coin) in behalf of the recipient, the bride, to the groom. The groom then returns it. Then they record in the ketubah, ve'kanina ("and we have completed the act of acquisition"). This symbolic act must be seen clearly by the witnesses, who are the makers of the contract, before they sign to its validity. If the ketubah is calligraphed by a scribe, or printed in advance of the wedding, one letter of the word ve'kanina (or the whole word) is usually omitted so that the ketubah is technically not completed before the kinyan itself is made. If this custom is overlooked it does not alter the ketubah's validity, so long as the witnesses in fact witness the kinyan-transfer of the handkerchief.

Everything Is Valid and Established 

". . . and everything is valid and established.” “Ha-kol sharir ve'kayam.”

The Sages took precautions that legal documents could not be tampered with or added to, and therefore instituted several procedures in concluding the document. In the ketubah, the summary is "for all that which is stated and explained above, by an instrument legally fit to establish a transaction." The formula follows, "and everything is valid and established." And the witnesses sign immediately thereafter on the next line beneath the formula.

And the Witnesses Attested to It

Witness____________________________

Witness____________________________

The Witnesses - The witnesses must follow these guidelines, although today preprinted ketubot usually prevent error.

1. The witness must write his first name, son of his father's first name, whether he is a kohen or Levi, preferably also the family name, and follow it with the word ed (witness).

2. It must be in his own handwriting, not that of the scribe.

3. It must be signed as close to the text as possible, so that no words can easily be inserted.

4. The signature should not begin in the middle of the line.

5. Ideally, the two witnesses should sign one name under the other, as they would on a get (divorce).

6. They should not sign before it is fully completed, including, if it is calligraphed, the omitted letter in ve'kanina.

7. They should have read the document or have had it read to them.

8. They should have witnessed both the kinyan and each other's signing, as on a get.

The ketubah will be read aloud and formally presented during the wedding ceremony. The couple must always know where the ketubah is located. If they cannot locate it, they must see a qualified rabbi who will write them a replacement ketubah, ketubah di'irkhesa. This is a matter of law, not mere custom.

Once the ketubah is completed, the procession proceeds from the groom's table to the bridal throne, accompanied by singing and dancing. The groom is at the head, followed by friends.