If you are interested in the topic I recommend the book “Moonwalking With Einstein” mentioned in the article. It's both entertaining and informative. I particularly liked the parts about mastering a skill as efficiently as possible.

I tried some memorizing techniques. It's a great feeling to improve 10x at a (specific) memorizing tasks in very little and effort time by using one weird trick©.

I used to try to remember random words during my commute and recall them when coming back. I took a list of random words from /usr/dict and set myself a timer of a few minutes to remember 30 words using memory palace. I used various places from the commute itself to store words. It was fun to see the words pop-up automatically in specific places on my way back. My performance declined after a while because I wasn't able to erase the previous words.