The thing with big data is knowing what your doing with this data and making sure you're translating it correctly for end users. Too many people are designers who don't know how to prep data correctly, or are technical people who know about databases and maybe even prepping data, but don't design correctly. If you can't do one part of the process, please get someone who can (until u can learn, of course). The end users will be much happier, and IT will be much happier.
My tool of choice is Qlikview cause I can do data prep in there and I can actually use my web development skills. I hear Tableau is really popular for self service BI though. And Excel seems to have gotten an upgrade from MS.