I think when I was younger, I felt like I couldn't find relevant information anywhere (of course this was awhile ago too and there weren't as many books in print that were readily available). Now I see it everywhere.
Websites can be good sources of information that you don't have to keep a hard copy of. Just make sure you cross-reference as much information as you possibly can, and don't take everything as the all-time rule for everything. Keep your wits about you, and know that a lot of it is going to be made up, will be unverified personal experiences that may not reflect anywhere else, may be fictitious, may be altered or tailored in a way to seek financial or narcissistic gain, etc... Bottom line, read what you can find but keep your head on your shoulders. If it sounds wonky, it probably is, and the more you read the more easily you will recognize the wonky things (like my termonology?).
Libraries. I repeat, Libraries. Some schools also have access to online library databases where you can read the book via your computer, and often those library inventories go beyond a single library.
If you don't feel comfortable, or are unable, to keep photocopies or print-outs of things you want, consider keeping your notes in a word document on a usb key or in an email account folder (I email myself notes from books, just in case my computer crashes or my usb key decides to bite the dust in an untimely manner).
I'm also going to assume that some people have internet access, but your ability to do some of this will depend on your own circumstances to judge accordingly.
There are some links floating around pertaining to free books whose copyright has expired (project gutenberg, for example). There are also a few websites around whose focus is to gather books whose copyright has expired, which deal specifically with witchcraft, fairy tales, meditation, relevant history, etc... that can be read on a computer. Sometimes the files can be saved, sometimes not.
Amazon.com has a free ereader you can download to your computer/phone/ereader/tablet/whatever the kids are using nowadays, and there are oodles of free books on amazon that can be "purchased" pertaining to Wicca, spirituality, new age topics, meditation, taoism, etc... that may be good reading material for the time being and will help you build a foundation in some things you'll find throughout a lot of belief systems (meditation, for example). You can create an account on amazon.com without registering a bank account or credit card. And you can keep wish lists and research books you may like to purchase in the future, and weed out over time those with poor reviews or which you find no longer interest you as time goes on. It can be a good tool.
Many parents are against their children learning about witchcraft and magic, but are fine with them learning about meditation and mindfulness. Depending on your path, there are a ton of other "neutral" type books that may interest you that may be acceptable to parents or others whom you're in the broom closet from.
Plants and gardening, herbalism, crystals and stones (not necessarily the magical properties, but their own geological properties), meditation, mindfulness (yoga?), animal behavior, etc...
The more you know about the natural world in its own right, the better other aspects of your path will make sense (if you're following an earth-based path).
The more you read, the more things will fit together and make sense. So don't limit your reading material.
I could probably write a novel on how to research and different resources, but I'll leave it here for now.
