You could create a private amazon account then load it with a gift card you purchased with cash. You can read kindle e-books on your phone or web browser.
My three favorite publishers are The Gallery of Magick, the Power of Magick Publishing, and BALG (shout-outs to Corwin Hargrove as well).
If you are concerned about privacy, Magickal Servitors by Damon Brand and The Master Works of Chaos Magick and Sigils of Power and Transformation by Adam Blackthorne are all good books that don’t require you to speak out loud or have any fancy equipment, just a pencil and paper, and a private space.
A couple suggestions - keep a journal where you can record your rituals and make note of your thoughts. I write a little about the situation, maybe why I want the result, any thoughts that come to mind really. I like to write by hand, but digital works too. I would use digital if privacy is a concern for you. For your first rituals, pick something that would be fun to manifest, but that you’re not too concerned about one way or the other. Do magick for something that you do genuinely want, but that you won’t worry about too much. This helps with “Lust for Result,” which is a common difficulty for newbies.