Sign up for online classes. Online classes are popular because the coursework can be done at your own pace. The downside to these classes is that the students need to have strong organizational skills and be disciplined enough to check the course website regularly.
Go the first week of classes. For standard classes, going to first week is necessary. This is when the instructor passes out the syllabus, explains the course requirements and goals, and lets you know what books are needed.
Follow the syllabus. For those that don't attend class regularly, the syllabus is their best friend. Following this outline allows you to keep updated with the required reading schedule and assignment due dates.
Attend class on assignment due dates and exam dates. Remember to attend these days to keep your grades up and get updates on changes in the syllabus and class schedule. Also, going to class at least one day before a scheduled exam is a good idea because the instructor could have a review day for the upcoming exam.
Homework is generally the easiest way to earn points in class, so make sure you turn in every assignment.