The way my mindset works, I don't pick up a lot of new series, but when I do start something new I do so in a big way - for instance, I picked up and read the first couple chapters of Pratchett's first Discworld novel while I was in a bookstore a handful of years ago; soon afterward my book collection encompassed the entire Discworld series.
For the past couple years I've been on a Warhammer 40K binge, ever since I picked up a couple omnibus editions of a few of the franchise's series that quickly prompted me to track down essentially every 40K novel ever published - other than the odd exception (my annual revisiting of The Death Gate Cycle, the few Witcher novels that have been translated, whatever new Discworld novel Pratchett has turned out, etc) I've pretty much just been reading 40K novels for the past 2 and a half years.
Presently I read an average of 2-3 novels per month, mainly because I've cut into the backlog of 40K books (and books from the couple of other active series I follow) that I haven't read yet (and want to) - essentially I'm on the cusp of the release cycle; I'd be reading even more books if the future wasn't hogging them.
Right now I'm in the middle of Blood Pact, the 12th Gaunt's Ghosts novel; directly before that I was reading Mogworld (for just slightly more than a day, it was a rather entertaining book so I didn't tend to put it down for much, heh).
