If you click on the Blender logo in the menu bar, to the right of the File menu and select Splash Screen, it will tell you the version in the splash screen.

It should also tell you the version in the lower left corner of the Blender window. If it's not visible, right click there and enable Blender Version in the popup.

Keyboard shortcuts are under keymap in the preferences.

To set a shortcut, search for the command by name in the search bar, find the command in the list, and select an existing shortcut to replace. Click on the shortcut and key in the replacement.
It's also possible to change short cuts using the right mouse menu:
- hover over a menu entry or other item that can have a shortcut.
- right click
- select Assign Shortcut
