First of all, I bet it isn't two stroke.
You have a 4 speed, ohc, manual clutch motorcycle.
the entire frame is the ground on this bike.
Check the battery, buy a new plug and points.
points are behind the circle plate on the left side of the bike.
Near the kick starter there is a screw in dipstick. Unscrew it, wipe it off put it in without screwing it in and take a reading.
Looks like fun.