There's a pk3 inside of the zip, just drag it onto gzdoom or use gzdoomlauncher to load it. Settings are in the doom settings menu. Have fun! (This is my first mod but i already knew a bunch of coding languages so that made it easier to learn zscript)
It's just customisable airstrafing, that's it! if you want me to make it compatible with other mods in later versions, just tell me the name of the mods and i'll try.