[Ambix]

On acoustic with light or medium strings - it's OK. I used to flatten them with nail file from time to time. But it might be much easier on your finger tips just to start with electric and then progress towards acoustic.

[wyclif]

I came here to say something similar to this. The action on most electric guitars (assuming they're set up properly) is a lot more forgiving for beginners than steel-string acoustics which are often set up with higher action in order to improve the volume.