What is similar between tech leads, senior, middle, and junior engineers? The teach. Some of them teach other engineers, and some of them teach themselves. I'm a bad teacher, but a pretty ok mentor. In this talk, I'll share my experience on: - what to learn - learning plan - how to find motivation and goals - what books to read and courses - to watch - when to stop This talk may be valuable for those teaching or aspiring to be a DevOps engineer.