Hey guys, thanks a lot for all the answers, actually i havent see all the fundamentals 2 topics and lessons before i wrote here, but now i get it, there`s the logical i was looking for!..i wish i have learned all this stuff years ago, but is never to late, i guess im lucky im not to old haha, im really enjoying my coming back, and my re-learning process, thanks, and have a nice time everyone!..