Here are some of mine:
M-. jump to source
M-, pop back to previous source
C-x f r Find References
C-x f i Find Implementations
C-x f t Find Type
C-x r v Rename Variable
C-x c a Code Actions
And a bunch more. I'd like to have an analogue to jump back with my C-x stuff like I do with M-. and M-, - any emacs people have suggestions on how to do that?
I don't know how fast you are with the mouse, but I've watched my co-workers jump into source and they can be so slow. I believe that I can answer questions I have regarding the codebase faster than they can, I don't have to rely on my memory for trivialities.