How to (cheaply) grind wheat berries for home bread making?
You can get a carona mill for under $50.  It looks like this:

But you are likely going to work pretty hard, and have to do plenty of sifting. I have one and it is fairly inconsistent, as the plates and mechanism are hard to dial in, and have a tendency to loosen. It is good enough to get you started with some experiments, though.