I suppose it goes without saying that faucets is one of the ways people get free bitcoins. There are a multitude out there though you'd have to sift through a bunch of ads (faucets make money from ad revenues). I mainly use Coinpot. Below is a quick-step guide.
Coinpot -- Register, and go to the following faucets to claim free bitcoins. Note: Use thesame email to register/sign in to all these sites. Hit "claim" every 30 minutes.
BonusBitCoin
Moonbit
Moonlite
Moondoge
BitFun
What I like about the moon-faucets is that you stand to get bonuses for making claims daily and for referring friends -- yep, full disclosure, the links provided are my referral links. You also get a mystery bonus and a mining bonus, though I'm not familiar how that works entirely. As it stands, I make roughly .00006 daily just claiming from these faucets. It's not much but it adds up. Also, I move my satoshis to an exchange to do a bit of trading in hopes of increasing the amount, but that's an entirely different topic...