https://marketplace.ultimaker.com/app/cura/plugins/Ghostkeeper/SettingsGuide2 is probably my best tool in learning 3d printing so far. All those million slicing parameters explained right in the UI. What's so great about it is that the tooltips not only explain what a setting does, but also the trade-off about using it or not.

Ultimaker Cura Marketplace marketplace.ultimaker.com