Lindsey Ellefson is Lifehacker’s Features Editor. She currently covers study and productivity hacks, as well as household and digital decluttering, and oversees the freelancers on the sex and ...

Flashcards, and the Leitner system, is a fantastic tool for memorising and drilling facts. Anything that can be studied in a quick "question and answer" format can be turned into flashcards – things ...

Web/iOS/Android: Whether you're a student in school or a lifelong learner, using flashcards can help you retain the information you're studying. StudyBlue is a crowd-sourced collection of these study ...