Read Children's Book
Children’s books are designed to teach the basics of language, including spelling, regular and irregular nouns and verbs, simple conjugation, and sentence structure.
Children aren’t often taught the grammar of their native tongues, but instead pick them up by reading and listening to other native speakers.
Read Different Materials
Focus on reading different genres and styles of writing, such as classic literature, textbooks, science-fiction, science books, biographies, blogs, essays, and articles. Pay attention to how sentences are structured, word order, spelling, and creative variations.
Try reading aloud so that you also get an idea of how the language sounds in conversation.
Read newspapers, listen to news radio, and watch televised news programs daily as well.
Pay Attention How Native Speakers Talk
Listen to how other people make sentences, where they place words in sentences, how they say common phrases, and the vocabulary they use. English has many rules and exceptions, so don’t be afraid to ask questions if you have any.
Try parroting what other people say by repeating it in order to understand how sentences are formed and to expand your vocabulary.
Practice Writing Every Day
Improve your grammar by writing and practicing any new rules or words you've learned. Keep a journal, write short stories, or email back and forth with friends or family.