I have to admit that I was a little concerned when I read your first post to the forums, your seemed really gung-ho and got your gear, or were at least planning on it before you knew if you would like riding or not.
I really congratulate you on being honest with yourself now. Riding is not easy. I assume that you can ride a bicycle fairly well, a motorcycle isn’t really anything more than a bicycle, with an engine attached. Well, at least that’s how they started.
There is a lot of good advice above, starting with dirt of a scooter would definitely get you used to being on two-wheels. Another suggestion is to find a friend with a 4-wheeler and see if they will let you play on it. Most of the controls are the same, and you don’t have to worry about falling over, unless you are going waaaay too fast. Possibly a combination of the above.
If you are good a ‘nerdy’ things, do the nerdy thing here. Sit back, take a look at where you are, and where you want to be then make a plan, and stick to it.