In the below keyboard shortcuts, I use the capital letters for reading clarity but this does not imply shift, if shift is needed, I will say shift.  So ⌘ + D does not mean hold shift. ⌘ + Shift + D does of course.
| Function | Shortcut | 
|---|---|
| New Tab | ⌘+T | 
| Close Tab or Window | ⌘+W(same as many mac apps) | 
| Go to Tab | ⌘+Number Key(ie:⌘2is 2nd tab) | 
| Go to Split Pane by Direction | ⌘+Option+Arrow Key |