Guys,

I just purchased the weapon. It has no manuel and I would like to give it a complete cleaning. How do I start?

Thanks,
Ski+3

There are many manuals on the market for the AK series of rifles. All AK's are basically the same, so any manual should work. Gun Digest also puts out a book on military firearms that has instructions. Brownells has some videos, I beleive, on gunsmithing the AK series. They are very good.
Lastly, and I am not kidding here, go to Youtube.com and type in AK-47 disassembly, or cleaning, or field stripping. I found some videos on the FN-FAL that were great. Good luck!