Do you need to learn techniques for using the tuning tool (the hammer-shaped tool)?.
Definately. That's probably the part I learned the most about. Initially I'd thought it odd that the handle doesn't rigidly connect to the tool's working end, but after seeting the technique of gently bumping the handle to nudge the pitch around it became obvious. It is probably a little more similar to tuning a violin than a guitar, as there is no gearing involved. The handle gives you plenty of mechanical advantage, but you're almost never grabbing it and turning, just a little at a time.