I am currently taking the course "Learning how to learn" on Coursera and found it extremely useful, and I'd like to share my notes with you (will come out in February). 

When I checked my debit card account just now, I found there is a weird "Kindle Unlimited" charge. I have never used a real Kindle E-reader, and the only purchase I made related to Kindle is an e-book, which is less than 5 bucks, and I simply treated it like a pdf file.