The Top 10 Things to do on Lag B'Omer

1. Light Bonfires: Commemorates the intense light that Rabbi Shimon ben Yochi brought to the world. 
2. Shoot Bows and Arrows: Symbolizes rainbows, which were not seen during Shimon ben Yochi’s time. 
3. Go to Rabbi Shimon ben Yochi’s Tomb/Go to Meron: Shimon ben Yochi died on this day and his tomb is in Meron. 
4. Children’s Parades: The Lubavitcher Rebbe started this tradition as a sign of Jewish unity. 
5. Eat Carob 
6. Get Married 
7. Get a Haircut 
8. Dance 
9. Listen to Music 
10. Party 

* Lag B'Omer is the 33rd day of the Counting of the Omer, on the 18th day of the month of Iyar. The Omer is the 49 day period between the holidays of Passover and Shavuot, and is a time of semi-mourning. Because it is a time of semi-mourning, several activities are not allowed (marriage, haircut, dance, party, listen to music) except for the 33rd day of the Omer, the day of passing of Rabbi Shimon ben Yochi, who is traditionally said to have written the Zohar (the book of the Kabbalah). In Judaism, death dates are celebrated more than birth dates, because when you celebrate on the death date, you are celebrating everything that this person accomplished during his or her life.

Not too many books on this holiday, 

but click above to see a children's book on Lag B'Omer and Shavuot