On-line resources
Sueños World Spanish, BBC website with videos, audio, transcripts from the world acclaimed series as well as extended links to exercises to practice as you learn.
The Spanish section of the BBC web site does also have a number of interactive exercises, grammar practice, and more.
Other free audio courses and resources for practice
Dictionaries
Verb conjugators (you can type a verb and get all its conjugations)
Videos on how to conjugate verbs:
News on-line
Radio