“Because humans have unlimited storage capacity, having total recall would be a mess,” says Bjork.
In that case, using only 10% of it shouldn't be a problem! :)
Joking aside, most of the suggestions in the article make sense.
After years and years of classes, some years off, and going back to taking classes (and doing much better in them), this is the advice I have. It is not free -- you are required to give me $5 if you ever find me in real life:
0) Understand the material. Keep a laptop connected to the Internet open during class. Google whatever you don't understand immediately, fill the gaps in your knowledge, and get back to the lecture. Bookmark or transcribe the info down if necessary (this helps me with definitions, acronyms, etc.). This will keep you from getting bored, since boredom generally results from not understanding. If you understand the material and the instructor is truly being boring, the tangential information you discover during this process may be more useful than the class itself!
1) Understand the material! I mean really -- even if you're behind. Do reading before class if you can. Check Wikipedia. Consult the Khan Academy. Do the homework, and spread it over multiple days, making sure you get some sleep in between the days. All-nighters, while they make for great stories, are not as helpful as you think. (My record was 36 hours straight -- I got the A -- but I wouldn't do it again if I had the chance!)
2) Avoid early morning classes, if possible. Unless you're a morning person -- in which case you probably don't need the advice.
3) Take notes during class. On paper, with indelible pen, in a bound notebook, writing/drawing only the points which seem relevant to you. The point of doing this is to help you focus and summarize, not to record the lecturers words for posterity. I've found that typing, while faster and more legible, does not aid my recall as well. Recording the lecture may be helpful if it's an exam review, but is pointless if you're not paying attention while there.
4) Teach someone the material right afterward, if you can. Tutor someone, or bore your significant other to tears...
5) Find a way to extend what you learned. Right down your ideas. Implement them if practical. Post them on Halfbakery if not...