Any way to slip past my parents on this ticket?

Too bad. It's a must appear with a parent/guardian. Get a good traffic lawyer, though.

How long jail time will he get for shoplifting $2000 worth, being his first time offense ?

First offense can sometimes get what is called "time served" which is the amount of time that you are under first under arrest until you appear in...

I agree also. It probably won't affect you but contact the licensing agency to make sure. Good Luck.

Is it legal in the state of California for a 15 year old girl and a 18 year old guy to date?

Yes but if you have sex at that age the young man could be charged criminally. http://michaelbrownlaw.net

A co-defendant is a person who is charged with the same or similar crime as you.