First of all - put some Puncture Proof (sold for basketballs) or Slime, in your
tire/tubes and you will never have to change a tire/tube out on the road
But if you don't - buy two six or eight inch adjustable wrenches. Clean
them up well and fill in the sides of the handles with J/B Weld epoxy. Use
the wrench ends to get the axle nuts off and the handle ends as 'tire irons'
to lever the tire off the wheel.
Buy a shop manual (I downloaded one of the internet for free), a set of
combination wrenches to about 3/4" and a decent set of sockets. You
can get both in a set at Sears on sale for about $60. Add a small pair
of channel-lock pliers and several assorted screwdrivers and you're set
for most things on a moped.
On the other hand - maybe you jus ain't Moped Material. Maybe you're
better off in a good-gas-mileage hatchback with an "I brake for yard sales!"
Look - you can either get out and run with the real dogs - or spend the rest of
your life watching from the porch. Your choice. And either way - it will
be the Right Choice.