Subtract your Final Gravity from the Original Gravity multiply the answer by 131.25, and that will tell you the ABV.
Leave in the bottle at 70F+ for about 3 weeks. Put one in the fridge for a couple days and then open it to see if it's carbed yet. If so you can fridge them all for about a week or more and then drink. You can also just leave them at room temp for longer if you desire and then put a few in the fridge about a week before drinking.