yeah it can be overwhelming, but it is pretty easy to narrow it down to a handful of boards. main thing is knowing what kind of riding you think you'll be doing. freestyle vs freeride, park, groomers, powder? maybe a bit of everything?
there are lots of 'buying my first board' threads on this forum that you should check out to get a head start. personally I would recommend a mid-flex flat-camber, but then again you didn't really give us a lot of information to work with.