dwm needs their documentation fixed. Not all of the keybindings are documented on the suckless webpage, and this has undoubtedly prevented many (including the author of this article) from realizing how easy it is to jump in without having to mod it.
Alt+I and Alt+D increment and decrement the number of windows in the master area, on the left by default.
Alt+L and Alt+H increase and decrease the width of the master area respectively.
Alt+J and Alt+K move focus to new windows.
And alt+enter switches the position of a focused window with an unfocused one.
It's incredibly easy and fun to be able to do all your window management from the keyboard, and dwm will run much more responsively on slightly older computers.
Alt+I and Alt+D increment and decrement the number of windows in the master area, on the left by default.
Alt+L and Alt+H increase and decrease the width of the master area respectively.
Alt+J and Alt+K move focus to new windows.
And alt+enter switches the position of a focused window with an unfocused one.
It's incredibly easy and fun to be able to do all your window management from the keyboard, and dwm will run much more responsively on slightly older computers.