4x4 96 Honda Four Trax

Question about 4x4.Im looking at a 96 hondatrax and the owner said it's 4x4.Ive never driven a 4x4 four wheeler but have been told they are hard to turn.Thats not so much my concern,but it being unnecessary.I was told to not use 4wd on dry roads in a car.I know atvs are meant for trails but I see myself doing both.Im also not sure if the atv can be changed from 4wd to 2wd,I'm guessing not.Any ideas?