Read, read, read!
Go to your local library and read all the books they can get for you on bicycles and cycling ... start the ones published recently and work your way back. Have a look over the magazine section ... some libraries carry bicycling magazines of one sort or another. Read those.
And then pick up a few books as you go along ... here are a few suggestions: http://astore.amazon.com/machka-20
Also read through the topics on various cycling websites and forums. Chances are you aren't the first person with a particular question and you may not even be the first person that day with a particular question. Before posting a question, read through all the topics on the first few pages of a forum to see if there's something there which may answer your questions.
A suggestion I made in another forum, copied and pasted here now ...
1. Read back a dozen pages or so before posting to make sure you aren't repeating a recent topic, especially one which 7 other people have posted about in the last week or two.
2. If you're posting about something seasonal, read last year's posts during that season. Your answer may be there. And it's OK to bump a thread from a year ago if you have new questions or information.
3. Go to the Index page and have a look at what other forums are available here. Maybe your question would be more appropriately asked in another forum, or maybe your answer is in another forum. http://www.bikeforums.net/forumdispl...52-Bike-Forums
4. Use the Search feature. It actually works quite well, as long as you use Advanced Search and take a moment to look at your options.
In the Road Forum, there's an intro thread which might be helpful:
This is a Cycling Terminology thread, with links to terms and definitions with which newbies might not be familiar:
Many of us got into cycling before the internet, so we learned by doing ... getting out there and riding every day ... and by reading whatever material we could find. In my case, my father subscribed to Bicycling Magazine back when it was good, and I grew up reading it. Then when I decided to get a bit more serious about cycling, I read everything I could get ahold of in my local library.