Personally I make use of Anki every morning for about 10-15 minutes. It really helps me to remember facts that I’m interested in and care about. I’d highly recommend it to anyone. Here’s an article that I like about how using Anki (or other spaced repetition flashcard software) helps you to learn a field at a deep level: Augmenting Long-term Memory

Anki looks good, though it seems like a lot of work - would be good to have a community made effort for things like Elixir and Phoenix

Personally I use good old fashioned pen n paper Whenever I am reading a book about a topic that I really want to grok, I make notes whenever I come across anything I need to remember that I don’t already know. Then, before starting the next reading session I read through all the notes first. As I progress through the book, I start skipping my earlier notes - or only review them periodically. I find this really works for me.

This thread may also be of interest:

I started using polarized for a book I am reading. To my dismay, the web version isn’t really that great (I am using Firefox) since you can’t even upload files without the page breaking.

I have now downloaded the native version for my machine, but the fact that it doesn’t keep track of progress automatically (it has to be manual) really doesn’t shine with me.

It does keep track of minutes read and is a nice way to share pdf’s, but you really don’t need this app to study or be more efficient. Most basic pdf viewers these days allow you to highlight text and you have a wide variety of cloud providers where you can place your books and sync them across devices.

I don’t see the added benefit of using polarized, at least not for now.

As for anki, I don’t really have an opinion as I have not tried it.

Hope it helps!