Start with basic primer for kids. Gradually go for textbooks. Learn to make sentences first. No need to use fancy words. Vocabulary can be increased later on, the first emphasis is on the structure of the sentence. Gradually move on to reading newspaper articles and learn new words and their context of use. Start speaking English from today. If you feel shy then talk to yourself in a mirror or in front of a tree. Start reading English novels, this will further enhance the structuring of your sentences and vocabulary capacity. Feel confident in whatever you speak.