There are a lot of dl links
over here, though I don't know how long they'll last. You can also probably torrent everything. Or buy it like a nice person!
DD is an interesting character and I also like that he lives in his own corner of the Marvel universe and barely gets affected by the big crossover events. You can read the whole of V2 without getting more than a couple of references to Civil War or Secret Invasion. It's nice, especially if you're new to Marvel entirely, to not get bogged down in all that lol.