RE: Advice on studying Emacs Lisp files

[Drew Adams]

> so I started a personal project of code reading.  I would like to start
> with (standard) Emacs files.
> 
> However, here's a problem: I'd like to take notes while I'm studying.
> And it's no surprise that I'd like to use Emacs to do this.  For obvious
> reasons, I don't want to make my notes in the files themselves (as
> comments).  OTOH, if I copy them to some personal directory, I lose the
> ability to use find-function (which will jump to the original files).
> 
> Do you have any suggestions for a good workflow for that?  I might use
> Org-mode (and links), but it would involve jumping between buffers,
> which might not be optimal.  Maybe someone has a better idea?

You can bookmark locations, and use annotations for your notes.
If you use Bookmark+ then you can use Org mode for the annotations.