Good for you bizzokiki
When we first started vacationing in Mexico I decided I wanted to converse with the locals in their own language so I've been taking Spanish classes on and off for about ten years now.
I'm currently not enrolled in a class, so to keep up with the Spanish I purchased the following book:
"The Ultimate Spanish Review and Pratice, Mastering Spanish Grammar for Confident Communication" published by Passport Books. You can find it
here.
I'm finding it's an excellent book. It's filled with great grammar explanations, examples, exercises, etc.
The other thing I do is read Spanish on a regular basis. I purchase the Spanish edition of the Selections from Reader's Digest and read that.
Anyway, good luck with the Spanish. It's a marvelous language.