Forgive my squirrely ignorance, but I'm getting stuck at the gate. I'm trying to make an add-on mod for Hexxit (specifically Project Zulu to start with) and I've been using the MinecraftForge tutorials to some success to date (nothing worth releasing, though). Unfortunately, at this point, I'm getting jammed up since the link to "Decompile the mod" instructions are, of course, missing. A nudge in the right direction should be all I need.
Update: So I've found BON, but when I try to use it to decompile the mods as zip/jar, I get a file (when I think I should be getting a directory), and when I decompress the zip/jar ahead of time and try to deob an individual class directly, I'm not getting source code.
Update 2: Derp... My insufficiently decaffeinated brain was combining "decompiling" and deobfuscating. Unsurprisingly, the latter doesn't work well without doing the former first.