This CPF
Study Aids site will help you in learning
the French language providing a list of valuable
books and many other references that will help
in the learning process.
verb2verbe.com
French and English verb conjugation.
Need help with French
Pronunciation & Accents
Help with French Grammar and pronunciation at FrenchLesson.org
french.about.com has various levels of help
with French grammar, reading, writing, pronunciation,
vocabulary, etc.
Le Point du FLE whose objective is to facilitate access to the best web-based activities for French as a foreign language. There are sites for interactive grammar, auto-corrected excercises, simulations, etc. which can be used for work in the classroom or for self-studies.