First:go to blockchain.info using your browser and creat an account !
*If you don't know how, just google it !
second: Go to bitin.it, you'll see "New paste"
make some word and paste it to New paste, paste tile (main) ,bitcoin address (earn bitcoins)
 Share you "new paste" and make everyone click to them
*Note: 1 click is 0.0025 Bitcoins. 
Your can share it on facebook, twitter, Google Plus,.....