How I learn Clojure

I’ve been working with Clojure for a couple of years already. I’ve done Clojure work as a contractor, and Parts, the project I spend most of my free time on, is written in it. I learned Clojure the same way I learned most other programming-related things: by looking at examples and hacking stuff together, slowly building understanding along the way. However, last year, when I was trying to get my first Clojure job, I had a disastrous coding interview with BG (a kind of a legendary figure in the Clojure world), which made me realise that I didn’t actually really know the language: without access to examples, I was useless. In the debrief, BG shared some advice for actually getting good at Clojure: work through the problems on 4clojure using only the official documentation (not ClojureDocs, which include examples!) and the Clojure source code. 4Clojure is a collection of programming problems that teach you the standard library, each problem building on the one before it, kind of in the…