Well about mining with cpu i got it free for 1 month. And about speed i got about 1-2 kh/s so i am not mining bitcoin. I am current mining bunnycoin. Getting around 11k bun per day and running it for around 4-5 hours. But i want to make full use of it. That why please someone help. I have heard that *nix system can run process background even after you close the putty session.