FOR LAG B'OMER: The Life of Rabbi Shimon bar Yochai. A glimpse into the greatness of this towering scholar whose yahrzeit is commemorated on Lag B’Omer (Rabbi Dovid Rosenfeld, Aish.com).
This essay is a nice compilation of (legendary) traditions about Rabbi Shimon bar Yochai (Yohai), also known as the Rashbi. The stories come mostly from the Talmud. R. Shimon is also the traditional (but pseudepigraphic) author of the Zohar, the largest and most influential Jewish mystical work. For more on him, start here and follow the links.