Yeah, ChrisFl has some really good questions. I've gotten girls numbers, but I'm still relatively clueless on what to do after I get them. I'd also like to respond to what DJ de Florida said:
Remember, the worst thing that can happen when you ask a women for her number is that she says "No".
That may be true. But a lot of times it's not what the girl says, but what she might be thinking when she says it that makes it hard for me. I start wondering if I made a fool of myself, if I got on her nerves, etc. And those thoughts stay in the back of my mind forever, even though I try not to dwell on them. Sometimes, even years later a memory will pop back into my mind of something I did, and I'll say to myself "You ****ing idiot!" I know I shouldn't worry about what other people think, but it's not as easy as it sounds.