I have been reading around on this site and others trying to wrap my head around miles, tips, tricks, lingo, everything but it is a bit overwhelming. I was hoping the fine people on this forum could give me some guidance. Here are my top three questions.

1. What should my first credit card sign up be?
I know some people sign up for tons of cards. I just want to start out with one so I don't get bogged down. Also, is there a great deal I need to snach up soon or should I wait for a deal on the horizon?

2. What are mileage runs? are they worth it? Are they right for me?

3. What are the biggest tips or tricks out there right now? I saw the video where a guy rented a bunch of rental cars just for the point bonus. How do you calculate how much $ to spend for points?

Again thanks for all your help everybody, I can't wait to get started!