<SUPER>fir<ENTER> (open firefox)
[drag window to the left edge so it takes half the screen]
<SUPER>ter<ENTER> (open terminal)
[drag window to the right edge so it takes the other half of the screen]
<CTRL><ALT><ARROW RIGHT> (Switch workspaces)
<SUPER>ter<ENTER> (open terminal)
[drag window to the left edge so it takes half the screen]
<CTRL><ALT><ARROW LEFT> (Switch workspaces)
<ALT><TAB> (Just tap it, don't press and hold) Focus stays on the same window.
Steps to reproduce it here:
<SUPER>fir<ENTER> (open firefox)
[drag window to the left edge so it takes half the screen]
<SUPER>ter<ENTER> (open terminal)
[drag window to the right edge so it takes the other half of the screen]
<CTRL><ALT><ARROW RIGHT> (Switch workspaces)
<SUPER>ter<ENTER> (open terminal)
[drag window to the left edge so it takes half the screen]
<CTRL><ALT><ARROW LEFT> (Switch workspaces)
<ALT><TAB> (Just tap it, don't press and hold) Focus stays on the same window.