>>13274908Libgen has free pdfs of basically anything you want. Only ones I couldn't find are obscure textbooks like fossil salamanders of North America. Really pissed that I couldn't get that for free. I'd start with youtube videos and introductory books on nature. Once you understand the basic concepts like cell theory and ecology you can move up to textbooks. Check your local half-priced books or some other used books store for a physical copy, it is way more useful than pdf. After that move on to more advanced books and focus on one's which deal with areas of your interest. I'd recommend the "biology of habitats" series, available for free on libgen. They go in depth and are a great way to gauge whether your understanding is advanced enough. If you don't know any advanced ones then go on libgen and type in key words like biology or ecology or whatever topic you want to learn more detailed information about. After that it's basically just college.
