Replying to UV and Wide angle lenses

Just bought a HV40 tonight and i am super pumped, cant wait to start making some legit stuff. So i am new to all the lenses and such, so if you could talk to me real stupid about UV lenses and Wide angles. I want to get a wide angle, but not super distorted, one that can capture a skier without bending him. Also what is this talk of UV lenses? I searchbarred and read in some other forums, but it was all too complicated. Thanks in advance!