Moving windows around
You can move windows around so as to arrange them nicely on screen. There are many maps for doing this — I find the most useful ones are:
<C-w>H— move the current window all the way to the left.<C-w>J— move the current window all the way to the bottom.<C-w>K— move the current window all the way to the top.<C-w>L— move the current window all the way to the right.
… look, it’s our old friend hjkl again! This time, you use the capital letters HJKL with our window prefix <C-w> to move the windows around. These ones are super useful if you want to turn a horizontal split into a vertical split, or vice-versa.
Some other useful ones are:
<C-w>x— exchange the current window with the next one, or the previous window if no next window exists.<C-w>r— ‘rotate’ the windows around.
Let’s try these in the editor. To make things easy for you, I’ve left a bunch of files on the filesystem. You should just be able to type :args *.txt, followed by :all to open them all up in a bunch of horizontal splits. Then, have a crack at the above bindings!