Phone the local community college and ask if they are offering any English as a Second Language (ESL) programs at the moment. Even if they are not, they may know of another organization or community group that is.
Check the Literacy Information and Communication System website. This online program is run by the federal government and it lists all the literary programs in America. Enrolling in a course close to where you live will help you get back to school sooner.
Speak English to native speakers every chance you get. If you do not know any native speakers--perhaps you are coming from overseas--talk to yourself. Name the objects you find in your house, plan your day aloud and tell yourself stories.
Listen to English radio. A news station is particularly good as what you miss the first time you listen to a broadcast, you may catch the second time. Listen and try to pronounce the words the same way the announcers do.
Look for radio programs that are designed for English students. Search until you find ones that offer text to supplement their audio programs. Being able to read the transcript will greatly improve your English comprehension.
Start an English diary. Download a translation and write at least a page in your journal every day. Type in one sentence at a time and then listen to it. Repeat it out loud. Writing every day will help you once you go back to school, as you will be well practiced at it.
Read English books, newspapers and magazines. Always have English material with you so that if you are standing in line at the supermarket you read can a few paragraphs.
Keep an English vocabulary book. Write down the words you do not know, look them up in a dictionary and then compose a sentence with the word to reinforce the meaning. Review your vocabulary book from time to time. Put stars beside any words you particularly need to know. If, for instance, you are going back to school to study to be a short-order cook, note all the words having to do with food or cooking.
Watch English films and television. When there are close-up shots of the actors, watch the way they move their mouths to say the word. If the film is on DVD, rewind and repeat.