and people say I play well/good for a fresh player. But I keep making stupid mistakes that makes me lose money on a per hour rate.

I have a severely limited bankroll, and I really really want to get better at the game. I am willing to put in 18 hours per day.

My question is, is it normal to make stupid mistakes when you are just a beginner?(I started playing February 2011, before that I have never played for money before, just for chips with friends)

Please help.

Of course it is normal to make stupid mistakes! My baby is just learning how to crawl and we set him on the bed and he just crawls right off and hits his head on the floor. Ouch! Soon enough he'll learn that you can't just crawl right off the bed or it'll hurt when you hit the floor (either that or we'll end up with a vegetable with brain damage...). Lol. But anyway, my point being, if you keep paying off players with your mediocre pairs or whatever then soon enough you will learn when to call, when not to, how much to bet when you got it, etc.

My advice to you though, if you have a very limited bankroll, don't be playin in stakes that'll kill you in one round! say you got 100$.. i'd play in like 10 $10 tourneys or sit and goes and try to build up a bankroll. or just play like .10/.25 cent stakes or even cheaper until you learn to play better. Nothing sucks more than going for the glory and pissing your whole bankroll away on a few games. That's what i did after winning about 30k playing great poker at medium stakes. I stepped it up to the $100, $215 dollar buy in tournaments and in a flash my B-roll was gone (and my wife dam near left me ) .... anyhoo, you get my point. Hope this helped!