Start with Freewheelin'. Then you can boo him for going electric. I think the best starting album, unless you want follow him more or less historically, is Blood on the Tracks. Besides being awesomely great, it features him as a story teller in a very accessible manner and IMO is great basis for "getting" Bob Dylan. Desire too, I think of them as a pair, and that would a good one to followup with. Then I'd go back to Highway 61 Revisted, key album in his career obviously. Freewheelin' too, at some point you really do have to listen to his pre electric stuff.