Explanatory dictionary of spanish verbs. Stem derivation method

WANT TO LEARN SPANISH VERBS THE EASY WAY ? Memorize selectively and not mechanically ! This book aims at teaching the Spanish verb conjugation through a new method called the STEM DERIVATION METHOD. It is a modern working tool : the method is self-teaching and you can learn alone, saving yourself a huge amount of time and effort. There are 6 basic tense formation rules (in yellow) to know. Any form in red is irregular and does not follow the appropriate rule.
So, you simply memorize the forms in red in the verb charts. You will gain confidence as the language will appear logical.