shuchim , have a good read of this document.
http://www.easa.eu.int/doc/Regulatio...003_Part66.pdf
It has the syllabus for all the modules.
Also put Club66pro into Google , you'll find a website that has lots of questions that can be used as a study aid to get you started.
They aren't easy exams by any stretch of the imagination but with some effort and time they are manageable.
Cheers, Fargoo