Great article. The programming practice "drills" come a little short though. You'd be better off reading the article and then deciding for yourself the way you should practice. My favorite ways of practicing and keeping my programming skills up-to-date is to do micro-projects taking about 2 or 3 days. It can be some challenging algorithmic problem, or solving a problem in a new language I want to get familiar with, or using a new library to do some interesting tasks, or trying a new build tool on one of my old projects. It's fun, it doesn't take long to get bored or tired and you learn something new.