The best way to reinforce what you have learned in class is by practicing your English outside of class. Below are just some of the hundreds of websites on the Internet that students can visit to practice and improve their English skills. Most are designed specifically for ESOL students. Many of the websites also provide additional activities to do online or at home.
Visit this website for one of the most comprehensive reviews of English grammar. It includes both detailed explanations and follow-up excercises. You can search by topic or alphabetically.