So which is the best guitar to learn on?
There's no perfect answer to this question. Electric guitars have a smaller body and a thinner neck which makes them physically easier to play. The amp and the pickups will do the work of projecting the sound. But an electric guitar is generally more expensive since you'll need an amp and other accessories. Also you always need to be somewhere near an outlet. Acoustic guitars are much simpler. You can always grab them and have a quick play, you can easily carry them to the park - it's just the basic instrument, all you need is our hands and maybe a pick.
All we can advice is to choose the type of guitar you are really excited about playing. AC/DC's Back In Black is your favourite album and you always wanted to learn to play Hells Bells? Well, get yourself an electric guitar and go for it! It doesn't have to be Angus Young's Gibson SG, we're pretty sure even he started from the scratch.
And don't worry - it's not a lifetime decision you'll be taking here. Most longtime guitarists are playing both, acoustic and electric guitar. You'll be able to easily adapt your knowlegdge from one to the other in the future.