Reading, Writing, Listening, Speaking, Singing and above all PRACTICE! This is the advice I give my students, you must practice between lessons. Another way is to teach someone else what you have been taught, (your friends, relatives etc), teaching is an excellent way of learning. If you have to watch movies, make sure they are not all action and foul language.The correct form of your question should be "How can I improve my English?" Finally, use the computer for learning, and not for playing games.