Though it should be noted that I spent a significant chunk of time waiting on parts. In terms of actual work, I've probably got about 20 hours in it. As for the words, mainly just describing the control layout, with the exception of the coil switching and phase reversal.
That, in a nutshell, has to do with the fact that each of the three pickups are what're called "humbuckers", which means that they contain two pickup coils packaged together, wired in series and out of phase, so as to cancel out or "buck" any outside electrical noise (hence the name humbucker), by virtue of the two individual coils pickup up the noise, out of phase from one another.
The switching allows you to use either the entire assembly as one unit (like a MusicMan bass, for example) or use either of the individual single coil pickups comprising it. Fender Jazz pickups, for example, are traditionally single coil, so this bass, despite having humbuckers, can emulate the Jazz bass's sound by selecting the individual coils from the two rear pickups that match the Jazz pickup locations.
And phase reversal just means that I can put any pickup out of phase with the others, which gives a very different sound.