A list of American Sign Language Dictionaries:

ASL Browser
ASL Pro (a comprehensive ASL dictionary, complete with a "Religious Signs" subsection)
ASL Pro Conversational Phrases (a guide to idioms and common ASL and English phrases)

Deaf Blogs and vLogs:

These are great for practicing your receptive skills and learning about today's issues in the Deaf world.

Deaf Read (a list of the most-read blogs and vLogs)
Ella's Flashlight (an articulate, thoughtful, and easy-to-read vLog)
Kiss-Fist ASL (one man's commentary on living in a hearing world. Lower quality video.)
ABC (jokes interspersed with educational posts, presented in 100% ASL)
Joey Baer's ASL Vlog (a highly-recommended vlog on a variety of topics - Deafhood, NAD, Deaf Ed, Gallaudet, and Leadership)