I use: H move to the to of the current view M move to the middle of the current view L move to the bottom of the current view

The way I remember them is (H)igh, (M)iddle, (L)ow

Also setting fold to indent and collapsing the whole file with zM is super helpful for navigating large files.

Lastly I use searching a lot with / or ? To just type the pattern I'm looking for # to search for the word under my cursor.