I would pick around 4-5 sites that have freerolls each day (those with cc freerolls should go first) since these freerolls have a good prizepool and better chance of winning something decent.
sites i would recommend.
888poker,
pokerstars,
partypoker,
unibet,ggpoker,
if you can't play on these sites or some play betonline purely for cc freerolls.
888 is a must though since these have good freerolls and rewards<
you can collect goldentokens etc.
i would try making a bankroll on each site and then have around 50-100 buy-ins untill you start using any.
(Keep playing freerolls always)
Maybe in a later stage move your bankrolls and 50/50 them over 2 sites
like 888/stars for micro tournaments.cashgames
again 888 challenges that could help you + the daily wheel 2 if you have a phone.
and stars cause they have the best micro games.
hope this helps