Any advice for someone new to DD?

I downloaded the app and signed up because I am a broke college student and I need some form of income this summer. I'm 20 M and I've already been approved in the app and everything. I have my own car too.

How much should I be looking at if I doordash for a few hours a day all week? I'm trying to save for a computer and put money towards student loans as well. I'm fine working 10-30 hours a week trying to get some money.

Any general tips for safety, how to maximize how much I can make, etc?