:wq or :x
:q
:q!
ctrl + o
i
v
u
/pattern
\vpattern
:%s/old/new/g
:%s/old/new/gc
:vim[grep] /pattern/ {{file}
} - search for pattern in multiple files
e.g. :vim[grep] /foo/ */
Ctrl + ws
Ctrl + wq
Ctrl + ww
">>"
"<<"
">%"
">ib"
">at"