Pronunciation
French phonology - French orthography books are very useful if you can produce the sounds, but are not familiar with the various spellings which can represent them.
The sounds themselves (the 37 French phonemes) are well presented in Wikipedia's online encyclopedia.
John Maidment's interactive exercises (University College London's website) provide excellent online practice:
16 French vowel sounds----Click here to do the exercise.
21 French consonant sound--Click here to do the exercise.
Search Paires Minimales" or "Mots couples" for interactive practice of French Minimal Pairs.
Gabrielle Guichard's "How to pronounce French": www.howtopronouncefrench.com/sitemap.html
Wikipedia's "French liaison rules": http://en.wikipedia.org/wiki/Liaison_(French)