How to Exit

:q[uit] 	Quit Vim. This fails when changes have been made.
:q[uit]! 	Quit without writing.
:cq[uit] 	Quit always, without writing.
:wq 	        Write the current file and exit.
:wq!  	        Write the current file and exit always.
:wq {file} 	Write to {file}. Exit if not editing the last
:wq! {file} 	Write to {file} and exit always.
:[range]wq[!] 	[file] Same as above, but only write the lines in [range].
ZZ 	        Write current file, if modified, and exit.
ZQ 	        Quit current file and exit (same as ":q!").

Editing a File

:e[dit] 	Edit the current file. This is useful to re-edit the current file, when it has been changed outside of Vim.
:e[dit]! 	Edit the current file always. Discard any changes to the current buffer. This is useful if you want to start all over again.
:e[dit] {file} 	Edit {file}.
:e[dit]! {file} Edit {file} always. Discard any changes to the current buffer.
gf 	        Edit the file whose name is under or after the cursor. Mnemonic: "goto file".

Inserting Text

a 	Append text after the cursor [count] times.
A 	Append text at the end of the line [count] times.
i 	Insert text before the cursor [count] times.
I 	Insert text before the first non-blank in the line [count] times.
gI 	Insert text in column 1 [count] times.
o 	Begin a new line below the cursor and insert text, repeat [count] times.
O 	Begin a new line above the cursor and insert text, repeat [count] times.

Inserting a file

:r[ead] [name] 	Insert the file [name] below the cursor.
:r[ead] !{cmd} 	Execute {cmd} and insert its standard output below the cursor.

Deleting Text

<Del> or
x 	        Delete [count] characters under and after the cursor
X 	        Delete [count] characters before the cursor
d{motion} 	Delete text that {motion} moves over
dd       	Delete [count] lines
D 	        Delete the characters under the cursor until the end of the line
{Visual}x or
{Visual}d 	Delete the highlighted text (for {Visual} see Selecting Text).
{Visual}CTRL-H or
{Visual} 	When in Select mode: Delete the highlighted text
{Visual}X or
{Visual}D 	                Delete the highlighted lines
:[range]d[elete] 	        Delete [range] lines (default: current line)
:[range]d[elete] {count} 	Delete {count} lines, starting with [range]

Searching

/{pattern}[/] 	        Search forward for the [count]'th occurrence of {pattern}
/{pattern}/{offset} 	Search forward for the [count]'th occurrence of {pattern} and go {offset} lines up or down.
/<CR> 	                Search forward for the [count]'th latest used pattern
//{offset}<CR> 	        Search forward for the [count]'th latest used pattern with new. If {offset} is empty no offset is used.
?{pattern}[?]<CR> 	Search backward for the [count]'th previous occurrence of {pattern}
?{pattern}?{offset}<CR> 	Search backward for the [count]'th previous occurrence of {pattern} and go {offset} lines up or down
?<CR> 	        Search backward for the [count]'th latest used pattern
??{offset}<CR> 	Search backward for the [count]'th latest used pattern with new {offset}. If {offset} is empty no offset is used.
n 	Repeat the latest "/" or "?" [count] times.
N 	Repeat the latest "/" or "?" [count] times in opposite direction.