I am quite cyclic in my Spanish learning but nevertheless, this book has been a great help for me in my effort to bust out some new Spanish verbs.  I like to pick out a few that seem to resonate with me at the time and practice, especially when I go to the Mexican Restaurant!

The Red Pocket Book of Spanish Verbs:  333 Fully Conjugated Verbs

How I began learning street Spanish/English

Spanglish:  Preguntas en el restaurante