The new UI is very, very beautiful — you must try it! You can find it under Appearance & Behavior in Settings. (So don't avoid trying a feature just because it's in Beta)
Keybindings can be changed to other IDEs'. Click the search icon in the top right and type keymap. If VS Code isn't listed, you need to download the VS Code Keymap plugin
Alt+Left ArrowAlt+Right ArrowYou can navigate between different pages. (Many applications like Chrome and Adobe Acrobat DC also use this shortcut)