so the other day I was riding around my neighbor hood and my 50 cut out and died. I tried to start it again but it wouldn't.... I thought it was a bad spark plug so I bought a new one. Now its still not starting, Im totally new to riding a bike and don't know much about them either, so where should start investigating my problem?

 

check your coil.

 

alright I checked it and everything seemed fine what next

 

U need fuel and spark to make it run. If its missing one of the two, its not gonna run. Check to make sure its getting both.