I am reading the New 52 Green Arrow run first, and hopefully by the time I get to the end, the first TPB will be out for the new Green Arrow. I did buy the single issue of GA Rebirth, but I quit collecting single issue books to focus on collections and probably wont buy anymore. Trades are easier to deal with. I will get random singles though (mostly when Third Eye Comics has a signing), and grabbed GA Rebirth #1 to make sure I would like it. And considering the fact that GA is one of the twice monthly books, the first collected book should be out in a few months...
Other than Green Arrow, I am excited for Flash (because of the show), Supergirl, and Hellblazer. I will wait for the TPBs to come out.