Congratulations on your first bike and first ride, sounds like it was a success. It was this time last year, when I was 26 I bought my first bike and took my first ride, gaining experience as along the way. Good choice for the first bike. I bought a 180+kg KLE, now that was fun to pick up the first time, alone in the forest.
As everyone has said just keep riding. You will feel more comfortable and enjoy it more with each ride, and watch out for those hillbilly trucks, they'll get you every time