Get a set of six checkering tools from Dem-Bart or Gunline, at 18 lines per inch (most common), along with the Jointer. You will want the Jointer, it is used for straightening out lines that wander off. Basically, you need a border tool, a single cutter to make the layout cuts, and a right and left hand spacer cutter. Those five tools will get you started, but most buy a set of six, along with the Jointer.
Last, either make you a checkering cradle, or buy a cheap one to get started. You can also buy patterns, but you'll need a pounce wheel to use with them, to transfer the pattern with. I would also buy some colored grease pencils, say white or yellow, to do layouts with, along with some carbon paper.
To practice, get hold of some of the stockmakers, and see if they have any dud stocks, with decent grips. You can use these to practice on, and buy them cheap.