Vim must be proficient in the use of several commands

Cursor Movement:

4 Directions

K

Hl

J

Up one page: ctrl+f

Turn down one page: ctrl+b

Flip up half page: Ctrl+u

Turn down half page: ctrl+d

Skip to the beginning of the document: GG

Skip to end of document: G

Jump to line 23:23gg or: 23

Copy one line: Y

Copy multiple lines: First move the cursor to the first row of the copy area, SHIFT+V, keypad down arrow selection, y copy,

The cursor is moved to the target area and P is pasted.

View replacement: Replace all AA with BBB

:%s/aa/bbb