This is a beginner level list of keyboard shortcuts for selecting and moving around your tools rather than actual menu items. This kind of thing is most definitely worth learning as it will speed up your work flow no end. One big point worth mentioning is that if you hold down shift while pressing the letter of your tool, it will cycle through the various modes of that tool.
That’s the list. Absolute basics for sure but you have to start somewhere. These will definitely speed up your work. You’ll probably use a handful of them everyday, others not so much. But if you use a tool repeatedly, take the time to commit it’s key to memory, you’re worth it!