Work
Get To Work
Your money will be decided by how much you work, so work alot. You'll need the money to buy the items.
For working you will deliver milk the way Master Roshi teaches his students to. You will zig zag between trees, climb stairs, do a brisk 3 mile run, and other things like that. Or you could work with some construction workers and move bags of concrete, use a jackhammer the proper way, move heavy boulders, and so on. The working will count as training too, but it is not worth as much as if you actually train.