I also started learning to play with an Acoustic, later got an Electric and then lately another Electric, and to be honest, the only difference between an Acoutsic and Electric that I've noticed (other than sound-wise) is that the Electric has a slightly slimmer neck and the strings are a bit easier to bend than the Acoustic. Other than that, there's no difference when it comes to playing them. You may need a bit more pressure to properly fret the notes on the Acoustic, but almost any technique you can do with an Electric, you can do with an Acoustic (my Acoustic doesn't have the Vibrato Bar like my two Electric Guitars do. I don't know if other Acoustic Guitars do have a Vibrato Bar).