Nice source and info summary from that. I definitely concur to learn the BIG languages and I do a LOT of work in python for my work, plus some smaller unlisted languages. Python is excellent for learning and is one of the easiest langauges for beginners to learn, so that's the best reason to start with python, over popularity, but they really go hand in hand in many ways.
Check out my channel for tips on learning Python, I've started sharing python tips on hive here for the python community!
RE: Want To Master A Programming Language? Start With Popularity.