After spending a few frustrating nights of wanting to burn my new tapestry loom to the ground, I'm finally getting the hang of weaving on this device.
Confession: I approached this project with plans that were overthought -- the tapestry loom setup is simple for a reason. The warp is wound directly on the loom (mistake #1) and while a shed can be created with string heddles, most of the weaving action comes from moving the weft, by hand, over and under the warp threads (mistake #2).
Thankfully, with each new row woven, the process gets a little clearer.