1. The Shabbat prior to Tisha Be'av is called "Shabbat Hazon" - the Shabbat of foretelling - as we read the Haftara portion from the prophecy of Isaiah (1:1-27), as the final of the "three of affliction," readings.   Isaiah does not lament because the Bet HaMikdash (The Temple) was destroyed; rather he laments over the underlying causes of that destruction. It's not enough to bemoan the great loss suffered by our people with the destruction of our Land, Jerusalem and the Mikdash. We must use our mourning as a way of initiating an examination of our present-day feelings, thoughts and deeds.  What have we done to eliminate the attitudes and practices that thousands of years ago sent our ancestors into exile - not once, but twice? (courtesy of ou.org) tishabeav

  1. Even those who have refrained from meat and wine since the beginning of Av, are permitted to eat meat and drink wine and grape juice on Shabbat Hazon.  In fact, it is a mitzvah to eat meat on Shabbat for those who enjoy it.   Wine is required for Kiddush.   We set aside any public displays of mourning on Shabbat.  Consumption of meat and wine is permitted even during Seuda Shelishit, on Shabbat afternoon.
  2. We stop eating prior to Shekiya/sunset. The seudah cannot be consumed past 8:47 pm.   The customs of a "Seuda Mafseket" –sitting on the floor, eating hard boiled eggs and bread, etc – are set aside this year since Erev Tisha Be'av is Shabbat.  Your Seuda should be eaten as a regular Shabbat meal.  Once Shabbat has concluded @ 9:33 pm, recite "Baruch Hamavdil Ben Kodesh L'chol" – Blessed is He who distinguishes between the holy and mundane – and you can now do melacha that was forbidden on Shabbat.  This is to be followed by the "Boreh Me'orei Ha'esh" blessing on the Havdala candle.   The Havdala blessing is to be recited on a cup of wine or grape juice Sunday  night following the fast. (see #11) 
  3. Once the fast begins, one should not eat, drink, wash, anoint oneself, wear leather shoes, or have marital relations.
  4. Washing in both cold and hot water is forbidden on Tisha Be'av.  It is of course permitted to "spot clean" dirt that has adhered to your hands or another part of your body in the course of Tisha Be'av.   Ritual washing of the hands, such as the morning Netilat Yadayim, cannot extend beyond one's knuckles.
  5. It is also forbidden to learn Torah "as usual" on Tisha Be'av, since Torah study is joyful.  Sources that deal with the destruction of the Temple, such as the accounts of the Destruction in the Talmud, commentaries on "Eicha" - the book of Lamentations, and the like, can be learned on Tisha Be'av. 
  6. Even pregnant and nursing women, who generally do not fast on the rabbinic fast days, do fast on Tisha Be'av.  
  7. Elderly people who feel too weak to fast, and whose doctor advises that they eat, are permitted to eat on Tisha Be'av.   Children are not required to fast until they are Bnai or Bnot Mitzvah (13 for boys and 12 for girls).  However, to educate them about the nature of the day, we do not give children treats like ice cream, chocolate, etc.
  8. One is not allowed to sit in a regular chair/couch on Tisha Be'av until midday Sunday (1:15 pm).
  9. We do not greet each other on Tisha Be'av, in the same manner that one does not greet a mourner.
  10. Once the fast is over @ 9:28 on Sunday night we say Havdala over a cup of wine, but with no besamim (spices) or candle.  Meat and wine can be consumed as of Sunday night; laundry, hot showers, shaving, are all permitted as soon as the fast is out.