English is mainly composed of common words, grammar, phonetic symbols and sentence patterns. These should have been laid in elementary school. It's not too late to make up. I suggest you buy some words and sentences in the endorsement of the Primary School Shorthand Manual first. Then learn phonetic symbols, learn phonetic symbols, and basically you can spell a word when you see it. You can buy a commonly used English book, 900 English sentences, and so on. Grammar is the most important. You can buy grammar books to make up your grammar. Then buy listening books to practice listening and listen to more English lectures. You can also learn English on English websites and forums.