How can you learn about cars if nobody will teach you and you don't have anywhere to go?

Got books? It's old school but it works. If you have a specific vehicle in mind, your own, for instance, buy a repair manual for it. Haynes repair manuals in particular are an excellent resource, especially for people who aren't necessarily car savvy. They are not full of technical data that you really don't need to know, just 'how to do it' stuff. If you can't buy one, or any other books you want, check out the library, they will often have this sort of resource plus computer availability, etc.

If there are mechanical shops around, try asking the mechanics (especially owner-operator types) if they would be willing to help in some fashion, or give advice. Just make it clear that you aren't just looking for freebies or anything and make it clear what it is that you do want. Many people are flattered to find that someone has a genuine interest in their field of work and expertise. Also, don't make a pest of yourself, sometimes it is better to take 'no' for an answer. And that is the worst that will happen, someone will say 'no, sorry', so you go find someone who will say 'yes'.

If you are thinking more along the lines of a career in the automotive industry, try looking into post-secondary institutions online or in person, regardless of your age, gender or schooling, and find out what courses would be required and what their prerequisites are. Nothing prevents you from taking the initiative and trying to learn what you need to know before you need it.

From the voice of experience: Don't be afraid to try to do it yourself (within reason, some things just aren't worth doing yourself). Don't be afraid of newer technologies like fuel injection, many of these things are very simple to deal with (essentially just plug 'n play type stuff). There is no such thing as a stupid question, only stupid mistakes made because you didn't ask the question.