Wrote out a hafway decent README

README.md

@@ -1,3 +1,55 @@
 # Quake2-GOG-TrackLinker
 
-A bash script for correctly linking the games and music tracks and expansions within the GOG release of Quake II: Quad Damage.
+A bash script for correctly linking the games and music tracks and expansions
+within the GOG release of _Quake II: Quad Damage_.
+
+## I don't get it.
+
+Basically, GOG or Bethesda goofed the release of _Quake 2: Quad Damage_ a
+little bit. On the assumption that many of the tracks are shared between games
+(_Quake II: The Reckoning_ includes some tracks from _Quake II_ alongside new
+ones, and similarly _Ground Zero_ mixes tracks from the previous expansion with
+its own) the GOG release just... tosses the lot into a single folder, and this
+has resulted in a few problems, namely that the files are a pain to carry over
+into a source port. None of them are going to know which track is which as a
+result!
+
+## So what does this do?
+This script sets up the appropriate folders within each game's folder and
+creates a bunch of symbolic links to the correct OGG files within the music
+folder provided by GOG. It's a great deal better than copying the actual files
+themselves because that would be a waste of disk space. Yes, I know this is the
+age of gods-knows-how-many-terabytes hard drives, but it's the PRINCIPLE of the
+thing! >:(
+
+## Okay, so how do I use this?
+
+First thing's first, you'll need to install the following, if you haven't done
+so already:
+* git
+* innoextract
+
+These are usually available in some up-to-date form on your distro's package
+manage. Once that's done:
+
+* Since Bethesda doesn't have the basic decency to provide a Linux installer
+you'll need to download the sole Windows one and save it somewhere. Preferably
+its own folder so that the next few steps don't conflict with its contents.
+* In a terminal `cd` to the folder you downloaded the installer to and then run
+`innoextract <filename of installer>`. This'll extract and dump everything into
+a folder called `app`.
+* Install your _Quake II_ source port of choice. I can't help you with this one
+because they're all different! D:
+* Copy the `baseq2`, `xatrix`, `rogue` and `music` folders into your source
+port's folder as per the source port's instructions.
+* You may need to rename the OGG files in the `music` folder to remove `Track`
+from their names and make sure track numbers lower than 10 have a leading zero
+(for example, `02.ogg`, not `2.ogg`)
+* `cd` to that source port folder and then run `git clone
+https://git.diskseven.com/TrollDecker/Quake2-GOG-TrackLinker.git`
+* Now while remaining in the source port's root folder (that means don't move!)
+enter `chmod +x Quake2-GOG-TrackLinker/linktracks.sh`. That'll make the script
+executable.
+* Finally, you can type `Quake2-GOG-TrackLinker/linktracks.sh` to run the
+script. Hopefully, all should go well. And if it doesn't... that's not a bridge
+that's been crossed yet. :\