Like you, I had no mentor when I was starting out. I read as much as I could (TBM and Deer and Deer Hunting are two good magazines to start with) and practiced shooting at every opportunity.
This was pre-internet, so it took a little doing to research the wildlife management areas, National Forests and game regulations in my state. The rules change from county to county, and so I had to see which ones allowed the weapon of choice, and when I could hunt. The state fish and game magazine offered more info on top of that, kill statistics by county, and how the mast crop was. The game and fish agency in your state can help you also.
I started hunting on my own, and have done so ever since. My learning curve has probably been a little flatter because of this, but I didn't learn anybody else's bad habits, either.
First off, you need to know the regs. Second, you need to find land to hunt on. I hunt public land exclusively, though I may have a line on some private land this year. Hop online, get your info, and go for it. You will learn as you go, and pick up stuff from books, friends, and your pals here. Hoist up your pants and hit the woods!
Killdeer