I've only been riding a year ,and before that I had no memory of ever being on a bike. I'm 53 now. I remember feeling intimated going into the bike shop. I didn't know the difference between a hybrid ,and a road bike ,but my brother had told me I wanted a hybrid,so at least I had that information. I felt silly ,and uncomfortable. I didn't want to test ride it ,because I had no balance (and this was just a hybrid). I brought a girlfriend in with me who knew about bikes. I didn't know how I was supposed to feel on it etc...so I just road it a few minutes ,and bought it. I figured it out at home. I knew nothing about the gears ,and kept dropping my chain. Fast forward a year , a clip less road bike ,at least 15 falls ,and a concussion ,and I'm doing great. Still working on that saddle issue ,but I've learned sooooooooooooooooooo much from this site. Just take lots of practice. If anyone told me a year ago I would be doing a Century in a month I would have never believed it.
Good luck