1. Get some wood (done already)
2. cut the wood to about 14 inches. This makes it a lot easier to split. 16 is OK, but if you have 20 or 22 inch long pieces, they'll be a lot harder to split.
3. find the right tool. A typical man can use a 6 or 8 lb maul comfortably. Many people prefer a lighter splitting ax like a Fiskar's. A regular ax isn't the right tool.
4. go outside, find a spot with a soft base (like the yard) so you don't damage the maul or the driveway if you miss
5. stand a round on a shorter, fatter round. put the round to be split on the far side of the splitting block
6. position yourself far enough from the log that you have to slightly reach to hit the top of the wood with the maul
7. Stand with feet side by side, so neither foot is too close to the danger
8. hold maul with left hand at end of handle, right hand near the head (if you're right handed)
9. aim for the near edge of the wood you are going to split
10. swing the maul over your head, sliding right hand down the handle the by next to left hand by the time the maul hits the wood
11. start by swinging lightly - your goal is just to land the maul on the wood, not try to split it
12. practice the swing until you can comfortably hit the wood
13. gradually swing harder
14. do a little each day, you'll learn muscle memory and won't get too tired
You can trust me, I just taught a bunch of boy scouts to split wood, and they all still have both feet intact.