I know where you get it but I have no idea how to install it. This first time around I made a mistake andsaved it to Microsoft Word. I am incredibly unfamiliar when it comes to modding games so break it down step-by-step on how to do this please.

That sounds like a pretty good description of what mods (short for modification[s]) do. ;D

Vast majority of modding is modifying of various game files (textures, meshes/models, sounds, scripts, etc.), but not the main executable. Obviously it can be done, I did it myself a couple of times (e.g. Arcanum, HoMM III), but it is rare and usually much more complicated (to know what to do, not the hex-editing itself) than modding.