Originally Posted by
Grand Bois
You don't need to buy a third bike to learn on. Learn on the two you have. You won't hurt them.
+1
The parts are either out in the open or easily accessed. A smart phone can be used to document how things came apart.g The only caution I would offer is in cleaning, polishing and detailing. Be careful with those older finishes because they can seemingly disappear, decals loosen, badge paint come out, etc.