to nicely split windows: https://github.com/rxhanson/Rectangle
catch mouse to move the cursor from one display to another so you can scroll through fullscreens using ctrl + arrow keys
i'm using cmd + option + , for main display and cmd + option + . for second display to my right
https://medium.com/thevelops-tech-blog/how-to-switch-focus-between-screens-in-macos-21c6f02883a6