Sefirat Haomer-Counting The Omer
The Omer is counted every night from the second seder
until
Shavuot
(feast of weeks)
The Bracha is as follows:

Baruch Atah Adoshem, Elokeynu Melech Haolam, Asher Kideshanu b'mitzvotav, Vetzivanu Al Sefirat Haomer
Praised are You, O Lord our G-d, who sanctified us with Your commandments, and commanded the Counting of the Omer
(Weekday Prayer Book, The Rabbinical Assembly)
Hayom __________ Yamim, (Shehem ____ Shavuot V'_____ Yamim) Laomer.
Laws Of Sefirah
It is traditional to not do the following things between Pesach and Lag Baomer (or Shavuot)
Have a handheld that operates on Palm OS ? If you do, point your browser to Pilotyid.com
for all kinds of Judaic programs. You can download a program that reminds you to count the Omer every night.