Take a GED assessment to test your current level of ability and determine the areas of study where you need to focus. There are online resources such as Quia that provide tests that will point out your problem areas. Like the actual GED, the assessment tests are timed to give you a more realistic score.
Register for a free online "pre-GED" prep course, such as GED for Free. These are free, but offer limited preparation for the GED exam.
Sign up for an online independent study course. You can pay as you go for many of these courses, such as the Adult Home Study course. For others, such as the Kaplan and Cornerstone Learning GED online courses, you pay an upfront fee. You then download the coursework material from the websites. The literature is available in both English and Spanish. These courses provide comprehensive one-on-one tutorials and realistic practice tests to help you prepare for your GED exam.
There are many GED prep books available published by credible test prep companies, such as Barron's, McGraw-Hill and The Princeton Review. These will help you prepare for the exam because they explain what the exam will cover and provide example problems, practice problems and sample tests with solutions. You can purchase these online or at a bookstore.
Enroll in an adult education course for GED exam preparation. These classes are generally government-subsidized, though some may require a small fee, depending on the state and student's income. These classes are often taught at community colleges or special learning schools by a certified teacher. Taking a class allows you to speak face-to-face with a teacher about your specific problem areas and may be more motivational than an independent course.