Programming

So after reading a number of posts and comments on here about Linux, I've decided to give 'er a go. I have access to an Azure VM, but I have never done anything involving Unix before and have only a basic understanding of coding in general.

Where do I even start? The most daunting thing for me is command line script, as it seems I have to memorize close to 150 common commands and their functions. Is there a set of tools or free classes that would make it easier for me to understand, or should I just get stuck in there? I was planning on using Pop!_OS since I do a lot of gaming and it seems like the closest thing Ubuntu has for that purpose.