There's nothing better than actually writing some code in the language of choice. I'm also no fan of videos on the subject. A few helpful blog posts can however

There's nothing better than actually writing some code in the language of choice. I'm also no fan of videos on the subject. A few helpful blog posts can however be great. My go to way of getting my feet wet is rewriting a library or a part of one I've developed before. I know the problem domain and can figure out how to tackle problems in the new language. Understanding the dependency management and publishing tooling is also always great fun!