You might search the Hall of Wisdom on this site, too. Most of it applies to BMWs and will be a big help.
There are a lot of "free" videos on YouTube that might help as well.
When I was doing maintenance on my 1150GSA, I built my own manometer for $3 to sync my throttle bodies and it worked just fine. No need for a TwinMax IMO.
Anyway, good luck. You'll be empowered if you learn to work on your own bike--and it'll serve you well in "the field" when you might need it most.