When you say "Get into DC" what do you mean? Do you want to start getting an ongoing monthly? Or do you just want some good DC stories? Do you want in on the DC superhero universe or just anything by DC?
If you're looking for something to add to your pull-list, the only one I read (and therefore can recommend) is BATMAN & ROBIN by Grant Morrison. It's on #13 or so, it shouldn't be hard to get the issues out and it's a fun title. However, Batman isn't Bruce Wayne, but Dick Grayson, and Robin is Batman's illegitimate son by way of Ra's Al Ghul's daughter, Damien. It's better than it sounds, and the truth is, only Damien really feels different. Grayson's Batman is pretty much just Batman. It's fun and easy to read.
If you want to buy some trades, well, let's continue with Grant Morrison; his work on DOOM PATROL, ANIMAL MAN, and JLA are all great. JLA is probably the most fun. His SEVEN SOLDIERS OF VICTORY, while long and confusing, is varied enough that it's certainly not dull. And there's of course, his ALL-STAR SUPERMAN series with Frank Quitely. All of his runs on these titles ended years ago, so it's all complete. Beyond Morrison there's (if you can find them) Mark Millar's issues of SUPERMAN ADVENTURES are a treasure, and his SUPERMAN: RED SON mini is good too. Another oldie, which I didn't read much of, but what I did I liked was GOTHAM CENTRAL which is all about the cops of Gotham City. Alan Moore's Superman stories; WHATEVER HAPPENED TO THE MAN OF TOMORROW? is a great two-issue story, as is the annual he wrote FOR THE MAN WHO HAS EVERYTHING, both of which are no doubt reprinted
somewhere. JLA: THE NAIL is a really cool mini-series about a world in which there is no Superman. There's also Bruce Timm's BATMAN: HARLEY & IVY along with BATMAN: MAD LOVE, both of which are adorable. There's Darwyne Cook's BATMAN: EGO and DC: THE NEW FRONTIER. He's a whole level of fantastic. His run on THE SPIRIT is wonderful. There's the infamous THE DARK KNIGHT RETURNS which is a milestone, but I never really cared for it. Then there's KINGDOM COME, another milestone, that I think is absolutely terrific. And, of course, there's Jeff Smith's adorable SHAZAM AND THE MONSTER SOCIETY OF EVIL four-issue mini. I'm sure there's more I'm forgetting.
Non DCU stuff thought by DC is a plenty. I can't recommend Alan Moore's ABC line enough. TOM STRONG is my personal favourite, and Tom's got a new 6-issue mini out now, THE ROBOTS OF DOOM, which is currently on #2. But the other titles are terrific; TOP 10, THE LEAGUE OF EXTRAORDINARY GENTLEMEN, PROMETHEA, TERRA OBSCURA, and TOMORROW STORIES. I recommend starting with the first volumes of them.
There's also Vertigo, which has a big variety of titles. FABLES is currently ongoing and brilliant. Y THE LAST MAN was a 60-issue series that's finished now but very engrossing. I can't recommend Garth Ennis' WAR STORIES enough. There's only two volumes, and it's very graphic, violent, and full of swearing, but it is sublime war poetry. I enjoyed THE NOBODY by Jeff Lemire, and I adore 100 BULLETS by Brian Azzarello and Eduardo Risso, a 100 issue series that has also been completed. There's also THE INVISIBLES which, like most of Grant Morrison's work, completely crazy. I've only read four trades of HELLBLAZER, the ones written by Brian Azzerello, and they were very good. And then there's, of course, Alan Moore and David Lloyd's exquisite V FOR VENDETTA and Moore and Dave Gibbons' WATCHMEN.
Depends on what you want. If you just want a current title, BATMAN & ROBIN's fun. If you want some of the best picks of what DCU has to offer; ALL-STAR SUPERMAN, KINGDOM COME, DC: THE NEW FRONTIER, SHAZAM AND THE MONSTER SOCIETY OF EVIL, and Morrison's 40+ run on JLA won't steer you wrong. Unless something else I mention piques your interest more, take a gander at those comics.