I downloaded Visual Studio Code (thanks!) and I'll keep chipping away at it. I would like to learn C as well, but the compiler and IDE I found is quirky.
You're welcome. Be aware that JetBrain's PyCharm IDE also has a rainbow indentation plugin
https://plugins.jetbrains.com/plugin/13308-indent-rainbow. The (limited) community version of Pycharm is still free.
I've tried free C IDEs like Code::Blocks, CodeLite and Dev C++ (which was actually written in Delphi and is now a product of Embarcadero) in the past. The funny thing is I started with Dev C++ with wxWidgets plugin to build applications. When I saw that Dev C++ was written in Delphi, it made me want to check Delphi out. I then jumped to Delphi development since it was easier to build applications in Delphi than with Dev C++/wxWidgets. Then some years later, I learned about Lazarus/FPC and I jumped ship again.

The shiniest C IDEs are RAD Studio C++, JetBrains CLion and the Qt platform. Not free so the choice is yours.
Cheers,
JD