h Move left one character
j Move down one line
k Move up one line
l Move right one character
w Move forward one word
b Move backward one word
i Insert before the cursor
dd Delete the current line
yy Yank (copy) the current line
p Paste after the cursor
u Undo
/ Search forward
:q Quit (if no changes have been made)
:q! Quit without saving changes
:w Save (write) the file
:wq Save and quit