Looking to revise the whys, hows and who's who of the Marvel universe? Well, the movie-spinning comic book company wants to help you out, offering hundreds of first issue editions across the company's entire history. The free digital editions will cover perennial favorites like Spider-Man, the X-Men and Avengers, as well as slightly less mainstream hits and spin-offs. The promotion kicked off yesterday and -- tying in with the company's presence at SXSW -- will run until 11PM ET on Tuesday. The titles can be downloaded through either Marvel's official comics app or its web-based digi
