You know there is a search button on this forum right?

I actually made a tutorial about it: https://bitcointalk.org/index.php?topic=2418352.msg24746679#msg24746679

To get back at your question, read these topics:
https://bitcointalk.org/index.php?topic=1911604.0
https://bitcointalk.org/index.php?topic=1330899.0
https://bitcointalk.org/index.php?topic=2368953.0
https://bitcointalk.org/index.php?topic=1983707.0
https://bitcointalk.org/index.php?topic=1678794.0;all