I wanted to give some feedback on the instructional approach. Don’t get me wrong. I love the site and I’m grateful for what you’ve taught me.
I personally think moving to more like 20% new learning and 80% review would be awesome. Also, the further you get from a concept, the less you review it. So the first question is on comments , then the next is one declaring variables but also requires comments. Then you store a value but also simply declare a variable and comment something out. Then you might not require commenting things out for 10 problems, then 30, then then 50.
80/20 might seem like too much, but when you are on problem 100 and problem 30 was two weeks ago, I might struggle to apply what I learned back then.
Thank you for this site though, it’s awesome!