I have underestimated, too! I've never taken classes during the summer before (never needed to), and now I'm taking Psych and a math course. One is an 8 week course, and the other a 10 week course. After writing all of the due dates and exam dates in my planner, it looks jam-packed and insane with exams every other Thursday for math, and quizzes and discussion boards due every Wednesday and Sunday for Psych. I also work full time and have two kiddos. It's going to be a lot to juggle! But I figured exactly what Hou,TX said.....if I can work my tail off and handle this insanity, then the classes in the "regular"/full semesters will seem easier to manage later on. My suggestion would be to get a planner and try to schedule days/times to read, write, and study, and jot down the class calendars. I know how ridiculous it may sound because when you have a job and family to take care of, your schedule can be pretty unpredictable in the evening after work and on weekends. But just try to stick to what you plan. Also, don't get behind. Stay ahead of the game, if possible. With these short summer courses, once you're behind, it looks like it would be a struggle to catch up. I'm taking one course on campus and the other online. After work, I'd go straight to the campus, come home and put the kiddos to bed depending on husband being days/nights, and then stay up and read ahead for the next class. Use the time after class to stay up and review what you learned that day! It can be hard....I was falling asleep trying to read for Psych....but it can be done. Thankfully, the professors have posted all of the quizzes/HW that will be due for the semester, so I'm able to work ahead as much as I can. Classes started Monday, and I've been able to read and quiz on chapter 1 in Psych, and complete 3 units of homework for the math course. These aren't due until Sunday and next Thursday, respectively. So I'm ahead of even my own planner. Don't get stressed, and remember to breathe. Work hard. Hang in there. Good luck.