Join the library. Ask for recommendations on English classics. A good librarian always knows. Every so often get an audiobook as well as the paper version for reference or reinforcement of something that may be confusing - be it a sentence, a paragraph, a phrase, a word or a chapter. Optionally, allow yourself only 2 checkouts of the same book before moving on. (That is a total of 4 weeks at my library - yes I still have a library card). I find this creates a learning pace you can measure & therefore stick to. It helps to have a consistent & structured timeline or you’ll not progress, could slowly give up or simply forget words after long breaks between books. Read out loud the new/interesting/difficult words to yourself so you can hear the sound those words make. Then listen to how other people say those words. Online dictionaries can be of help with pronunciation. If you’re not confident to use a word or phrase, even if you’ve read it - you’ll soon forget it or not use it correctly. Confidence comes with familiarity; familiarity with practice.