The ones you see when you post an answer, it's like, your own personal quote. How do you make one? Do you need to be a member to this site for a long time?

Hit you're my profile button at the top.
Then on the left hand side under edit options it says edit signature.

Thanks. Im not really sure how to use this site 100%.. How do you get those green things next to you're name ?

Keep answering questions and you get them when people give you greenie/agrees:

THANK YOU NoHelp..
Let me just say that your name doesn't describe you.. your actually very helpful !