After having internalized the other-window commands, I’m now focusing on commands working with balanced expressions (or s-expressions). Depending on the current buffer mode, this can be a word, a string literal, an XML tag or a LISP expression. The ones I’ve found most useful are:
forward-sexp (C-M-f)
backward-sexp (C-M-b)
Move forward or backward over a balanced expression. Feels way more
intuitive than forward-word/backward-word when navigating code.
kill-sexp (C-M-k)
Kill the balanced expression in front of the cursor (i.e. the one you
would jump over with forward-sexp. I find this a lot more efficient
than repeating kill-word over and over.
transpose-sexps (C-M-t)
I admit I haven’t used this a lot. It’s like transpose-chars, but
works on balanced expressions.