This is relevant for me because I just started trying to teach myself to play guitar at the beginning of 2012. For me, the hardest part was definitely not figuring out where to put my fingers, but putting them there without touching other strings. Even if your finger is just a little bit too close to another string, it can push a note flat or sharp, making the chord sound bad. Learning the mechanics of finger placement is more difficult than learning the basic locations.

The other difficult thing is developing the muscle memory to move quickly between chords. At this point, I can play simple passages from songs, but complicated chord movements are what's most difficult, not figuring out what finger placement is required. This means sitting down and playing the same passage over, and over, and over, and over... You get the idea.

Having played instruments all through school, this isn't a surprise to me, but for a lot of folks it is. Playing an instrument is a skill just like many sports, or even video games. Think of how much better you are on hour 30 of playing a FPS game than you were in hour 1.

The gTar seems to solve the most rudimentary of the challenges, but I can't see where it gets you to "playing songs" (in a real way) much faster.