What is the quickest way to level your character without spending real money? i'm trying to level my character but the quests dont give that much experience...? what are your strategies?

kill monsters and do quests

IMO quests and dailies give tons of exp.

I can get to around lvl 20 pretty fast, and then after that it's 1-2 levels a day by doing dailies and questing...

This... it wasn't a HUGE problem until I hit 38-ish. Make sure you do quests in both areas (Sascilla Steppes and Howling Mountains, varanas, etc.) because that way it's easier to make the exp more suitable for your level. Right now I'm at level 44 and I'm going for about 1 level each day that I play.