Comment by fasterik

I don't really understand this perspective. You don't need to memorize anything to learn a new programming language. You choose a medium-sized project you've already done in another language, start with "Hello world," and add one line of code at a time until the project is done. When there's something you need that you don't know how to do, you look it up.

You'll end up with a strong understanding of the subset of the language that's actually useful for the thing you want to build.