all my bankrolls on many many sites all started with freerolls
sure it aint easy, sure its a loooong game, and sure you will get bad beats and donked out
but it is very doable
study some more tourny play articles
stay very tight in the beginning (cuz its an allin fest)
open up your range as blinds/antes get larger,
learn to play position- fold when not in position and steal when you have.
patience is huge, but also not being afraid to get it in when you're sure you're ahead
(meaning dont slowplay but reraise/ shove, isolating players and stealing more pots)
I dont freeroll as often but this year Ive cashed at least 4-5 on fulltilt,
and can run deep most of the time, you just got to adjust your style to the game type and players at your tbl
gl to you