Learn what content will be covered in the basic skills test by looking at the test framework. This is a packet of information on the topics in the basic skills test. The framework can be found on the ICTS website.
Take the online Basic Skills Diagnostic Practice Test offered free by the ICTS. This will allow you to see the areas you need further practice in and help you to become familiar with the test format. The diagnostic test also includes a tutorial on how answers are scored.
Use the Basic Skills Preparation Program to help prepare. This is a free online tutorial that helps you work through all the areas covered on the test. To use the program, you'll need to be a registered university or college student.
Use a commercial study guide to help you prepare. These books will guide you through the knowledge areas you need to proficient in and provide sample questions and tips. Study guides to the basic skills test are available at bookstores and through Amazon.
Review math, English language and literature by reading through high school textbooks. You can also find a tutor who specializes in the basic skills test.
Take a review course. Many Illinois universities offer review courses for the basic skills test, and these are often free. Contact your university's careers office for more information on whether this is available to you.