It's been a while but finally I am back again trying to write some more lessons on verbs in Spanish. So, I've decided to make this come-back a list of recommendations of sites (other than this one of course :-) where you can learn more about verbs in Spanish:
1 - Fred has compiled an amazing list of verbs in Spanish together with each Spanish verb conjugation. Don't judge a book by its cover, this site can be incredibly useful!
2 - I hope you enjoy this Wikipedia article on Spanish verbs as much as I did. It is a little heavy, but you are sure to learn some basics of Spanish verbs conjugation.
3 - Here you have a Spanish verbs conjugator trainer which you help you drill Spanish verbs conjugation online. Really useful tool (and free!)
More resources coming soon...(I promise! :-)