It’s always good to learn new things, especially things which are interesting. You never know when something you learn will come in handy later on.
There are so many technologies out there. I have taken a crack at learning a few of them:
Angular
Angular is a web app framework.
GIS
GIS is a system for working with geographic data.
Jekyll
Jekyll is a static site builder.
* Tic-Tac-Toe-pology
Playing board games by applying local Turing machines to topological manifolds.
* My own project. Not so much learning a technology but this site is an easy way to present it.