It was a while back when I learned it, but with time, it becomes intuitive. You'll get the hang of it: It gets messy: that's part of the confusing part!
Yes, the notation will become quite familiar. But initially, it is really like learning a new language, with the need to keep translating to what is more familiar. But once you learn the "language", it will read much more smoothly.
It means the same as [( p --> q) AND ( q --> p ) ]
feel free to accept my answer, when you're ready. ;-) Even if you accept now, I will still be available if you "ping" me: @amwhy, or commenting below my answer --> I get notified.
I think I need a break for now. I will accept your answer. Technically I feel that its not complete because it doesn't show the final steps of the proof, but you have taught me so much other stuff that I think you more than deserve the accept.