Do you need a refresher on passive voice? Or maybe somebody accused you of using passive voice and you were like, "Passive whuh?"
Do yourself a favor and check out this post on the very enlightening edittorrent blog. I've known about it for one day, and already I've become a better writer because of it.
Why do you want to use active voice? Alicia has the answer:
Drama, power, conflict: Those are all in the active voice, and so you should default to active construction for livelier prose.
This short post was written by me (<--passive voice). But Alicia (active voice) wrote this longer, more useful one:
edittorrent: Passive voice-- just some thoughts