Basic Module Tutorial or Example I am having a difficult time understanding how to output even a simple variable using a module. Ultimately I have PHP code that I need to execute to generate a PDF. I managed to do this in V2.5. I'm following all the tutorials that I can find, bu none I feel aren't clear. Any recommendations on the simplest of examples, even if it's just outputting a variable.

Thanks
I haven't tried this tutorial yet, but having learned a lot about Craft 3 from Andrew Welch's other tutorials, I don't doubt this may have some nuggets of useful information to get you on your way.

https://nystudio107.com/blog/enhancing-a-craft-cms-3-website-with-a-custom-module