Mining Bitcoin Using Free Cloud Server :

1. Register Here First : http://goo.gl/QcBb5W

2. Log in to your account.

3. Go to 'Billing' and input your info. (You can use your Empty Prepaid/Debit Card/VCC)

4. Scroll below and enter the promo code 2014SSD for 10$ credit.

5. Create a new droplet (server) with your free cash (you can create two 5$ droplets or one 10$). They have pretty good configurations, especially since you got them for free. Pirate

6. Follow this tutorial to start mining BitCoins : http://goo.gl/K5mB8P

Basically what you just did is rented a cloud server for free (it's usually paid) and set it to mine BTC. A friend of mine in another forum says he earned 28$ with it already (since yesterday). Good luck!