Jody Miller recently put together a very thorough guide of 25 Scientifically Proven Tips for More Effective Studying. She spent time reviewing a number of scientific studies, along with data provided by Harvard, Cornell, Yale, and MIT to create a helpful guide filled with study tips for students of all ages.
This comprehensive guide covers everything from studying for exams to the best study apps. I recommend that all my students review this.
I think many adults will find it useful too.