Tabs and Windows

Function	Shortcut
New Tab	`⌘` + `T`
Close Tab or Window	`⌘` + `W` (same as many mac apps)
Go to Tab	`⌘` + `Number Key` (ie: `⌘2` is 2nd tab)
Go to Split Pane by Direction	`⌘` + `Option` + `Arrow Key`
Cycle iTerm Windows	`⌘` + `backtick` (true of all mac apps and works with desktops/mission control)
Splitting
Split Window Vertically (same profile)	`⌘` + `D`
Split Window Horizontally (same profile)	`⌘` + `Shift` + `D` (mnemonic: shift is a wide horizontal key)
Moving
Move a pane with the mouse	`⌘` + `Alt` + `Shift` and then drag the pane from anywhere
Fullscreen
Fullscreen	`⌘`+ `Enter`
Maximize a pane	`⌘` + `Shift` + `Enter` (use with fullscreen to temp fullscreen a pane!)
Resize Pane	`Ctrl` + `⌘` + `Arrow` (given you haven't mapped this to something else)
Less Often Used By Me
Go to Split Pane by Order of Use	`⌘` + `]` , `⌘` + `[`
Split Window Horizontally (new profile)	`Option` + `⌘` + `H`
Split Window Vertically (new profile)	`Option` + `⌘` + `V`
Previous Tab	`⌘`+ `Left Arrow` (I usually move by tab number)
Next Tab	`⌘`+ `Right Arrow`
Go to Window	`⌘` + `Option` + `Number`

Basic Moves

Function	Shortcut
Move back one character	`Ctrl` + `B`
Move forward one character	`Ctrl` + `F`
Delete current character	`Ctrl` + `D`
Delete previous word (in shell)	`Ctrl` + `W`

Moving Faster

A lot of shell shortcuts work in iterm and it's good to learn these because arrow keys, home/end keys and Mac equivalents don't always work. For example ⌘ + Left Arrow is usually the same as Home (go to beginning of current line) but that doesn't work in the shell. Home works in many apps but it takes you away from the home row.

Function	Shortcut
Move to the start of line	`Ctrl` + `A` or `Home`
Move to the end of line	`Ctrl` + `E` or `End`
Move forward a word	`Option` + `F`
Move backward a word	`Option` + `B`
Set Mark	`⌘` + `M`
Jump to Mark	`⌘` + `J`
Moving by word on a line (this is a shell thing but passes through fine)	`Ctrl` + `Left/Right Arrow`
Cursor Jump with Mouse (shell and vim - might depend on config)	`Option` + `Left Click`

Copy and Paste with iTerm without using the mouse

I don't use this feature too much.

Function	Shortcut
Enter Copy Mode	`Shift` + `⌘` + `C`
Enter Character Selection Mode in Copy Mode	`Ctrl` + `V`
Move cursor in Copy Mode	`HJKL` vim motions or arrow keys
Copy text in Copy Mode	`Ctrl` + `K`

Copy actions goes into the normal system clipboard which you can paste like normal.

Search the Command History

Function	Shortcut
Search as you type	`Ctrl` + `R` and type the search term; Repeat `Ctrl` + `R` to loop through result
Search the last remembered search term	`Ctrl` + `R` twice
End the search at current history entry	`Ctrl` + `Y`
Cancel the search and restore original line	`Ctrl` + `G`

Misc

Function	Shortcut
Clear the screen/pane (when `Ctrl + L` won't work)	`⌘` + `K` (I use this all the time)
Broadcast command to all panes in window (nice when needed!)	`⌘` + `Alt` + `I` (again to toggle)
Find Cursor	`⌘` + `/` or use a theme or cursor shape that is easy to see