What is SRS?
When I recommend spaced repetition to people, it's hard to decide what explanation of what it is matches the person best. Thus, I compiled some of my favorite explanations, to let people wanting to learn about SRS choose for themselves. Let me know[link to page with contact info] if there's an explanation you'd like me to add (or if you dislike one of the ones listed here)
How to Remember Anything Forever-Ish: around 20 minutes to get through. It's a comic.
Forget about Forgetting: ~4,820 words. Written in 1994 but still a good introduction to SRS from a more scientific perspective.
General principles of SuperMemo: ~1,300 words, basic explanation of how SRS works
Want to Remember Everything You'll Ever Learn? Surrender to This Algorithm: ~6,000 words. this is where I discovered SRS/SuperMemo. Very interesting because it also introduces some of Woz's philosophy
HOW TO LEARN AND STUDY ANYTHING: good video introduction made by Fowl of the supermemo.wiki community
If the above has convinced you of the merit of spaced repetition, you may then want to read about incremental reading.