welcome carlux ! i'm glad to hear that you've already found some helpful information here. it's amazing how many many really knowledgeable members we have ; it's really an amazing place. we're very friendly too, so please don't hesitate to ask any questions.
don't miss the ebook uploads section, as well, to find lots of great books formatted by our members, for free ! (click the "e-books" link in the blue nav bar at the top of any page).