Bitcoin Tip

http://linkme.ufanet.ru/images/f6864d9839e07a30db903f502bf88b11.png

 Probably the easiest way of earning is "a cloud mining". You buy power and it isn't necessary neither to scorch video, nor infinitely to stick buttons. The percentage is more than that in bank. Half a year Payback. Later only profit.
Big and fast earnings don't happen. I have tried a lot. I use cranes too when I was not feeling lazy. I used 5, 10, 15 minute cranes .

Are there are special exchangers where it is possible to change a bitcoin for dollar? How quick is it possible to earn 1 bitcoin?
Do I need necessarily need a powerful computer?