Start small, and work your way up, ....as mentioned best way is to start making chips...nothing beats experience, ....nowadays, lots of info on line, and some machines that are perfect for hobbyists are not out of this world in price....best advice I can give, it’s not the machine, it’s the operator knowing how the materiel is going to react in the machine....it’s not really rocket science .....soft metals, or materials react differently than hard stuff...measuring and mathematics just as important.....
Pat