I have a tiny CNC router (approx. 12 x 12). I'm new to CNC routers. I was wondering if there are any good online resources (books in PDF format) for beginners to learn how to use these machines to cut materials like wood, aluminumm, plastic, etc? I really need basic stuff, like "use a bit like this, hold down material like this, spin at this speed, feed at this speed," etc.
I've searched for "books" on this site and have chased-down some PDF titles mentioned but come up empty handed, so direct links would be helpful if possible.