I have some questions about running.

1. What’s the optimal way to warm up?
2. I keep reading contradictory things about stretching. What should I actually be doing?
3. Do I seriously have to buy real running shoes or can I keep using the crappy ones I have now?
4. What time of day do you run?
5. What’s your favorite song(s) to run to?
6. Should you eat before or after you run? Does it matter?

Thanks!