Each 3.0 Free Trial is a complete version of our program up through Lesson 15. This means you will have access to our lectures, our audiovisual solutions (to each problem), our eBook, and our automated grading feature. Moreover, there is no time limit for completing the trial. It never expires! There are also no limits to the number of products you can try! And if you decide to purchase the full version, all of your grades will transfer and all of your student’s progress will be saved!