@b0rk while shell history search is a great relief, positional jumps at the prompt with keyboard shortcuts - between word boundaries, beginning and end - are the enabler for comfortably writing new history. That would be my "one tip".

Helpful to this day: a pattern in note files: # headline, then grep -A1 when trying to recall on a used keyword in the file.

manpage searching in the pager for what args do: after / a space preceding the hyphen will quickly churn a hit