A good instructor will trim your plane to fly at a slow manageable speed. Well designed trainers practically fly themselves - they're more like guided kites. It takes a while to teach your brain and hands the new reflexes you need to fly, and at first even the slow sedate speed of a Trainer will seem more than you can handle, but trust me, soon you'll be craving more speed. We all go through the speed thing. Some never get over it.
Landings are the hardest thing to learn, and even harder to learn to do right.
To start with, a lot of beginners wind up in the grass, sometimes cartwheeling the plane. It's okay, and won't hurt anything, just expect to straighten some bent landing gear on occasion. More than likely you'll break a lot of propellers to start with. Don't worry about it. I bought them by the handful when I started, now I buy a couple every year.