There are too many sites of internet, where you can get bitcoins. The sites who offer to share bitcoins, if you point your wallet and do some actions, are called "faucets".
The actions are usually related to captcha solving. After correct solving, you will get satoshis. 1 satoshi is equal to 1 bitcoin/100 000 000.
The faucets can pay a fixed number of satoshis, or different(usually it's pointed on site). The most part of faucets can pay few times per day(a time interval is pointed on site).
Almost all faucets are paying immediately to Faucetbox service. When withdrawal limit is reached(you may configure it), a service is transfer currency into wallet during a day. It's a convenient automatic way, because you shouldn't wait for minimal withdrawal limit.
There are faucets, who pay a reward to internal count, then withdraw it by request or when minimal sum is reached. These faucets pay you directly into wallet. But you should be attentive with such faucets, sometimes the get a withdrawal fee, so it's not make sense for minimal currency amount.
On our site we offer to solve captcha too and get satoshis immediately to Faucetbox. You may see a detailed instruction on this site.