Other
Jewish Path: Notes on Counting the Omer
Many questions and answers about the Omer. Describes such things as when Jews should begin counting the Omer and what to do if the counting is skipped one night.
Judaism 101
Judaism 101: The Counting of the Omer
Provides historical background. Also explains why it is that Jews count the Omer. Provides the dates of Lag B'Omer.