you hold the back brake in and push the electric start button (yellow with lightning bolt)
yes. you must be highly mechanically inclined
Check your spark plug has spark. If so, spray some starter fluid into engine then try. You can find repair manuals for many types of mopeds at Mopedarmy.com.
It depends upon what state you live in. In Michigan, you can drive a moped at 14 years old.
take the plastics off and drill the key slot