Go to your local library. Discover what books they might have available on bicycles and cycling. Read lots.

When I started, the library where I lived had about 5 books on cycling ... most relatively old ... but I read them all anyway. Just the other day I was browsing through my current library's online catalogue, and I noticed that I have access to a lot of books on cycling, and several of them are quite new. So the selection of what is available in libraries seems to have improved ... probably through inter-library loan systems.