Hello! I'm new to the forum but a dedicated e-reader

since 2006 or so.
Over the years I've owned many Bookeen Cybook Opuses and Sony Pocket Editions, but they all eventually died. (The screens on the Bookeens, and the batteries on the Sonys.)
I recently bought a Nook Glowlight 4, because it seemed to be the only new small ereader with physical buttons (a requirement of mine). It also allowed sideloading, which is another requirement of mine.
I'd like to disable the page turning by touch screen because I carry my reader around the house and accidentally touch the screen with my thumb all. the. damn. time.
I don't need any features which aren't built into the Glowlight 4 beyond this.
I've worked with game mods (though haven't made any of my own), but have never 'modded' a reader.
Any basic instructions on how to do this for me?
Thank you so much!
SaintGenevieve