I'm a bit confused by the interface. You suggest in a comment that it's built on something called "Slide Deck" but I've never encountered that.

I seem to have the main slide I'm reading with previous and next buttons. My mouse wheel (I discovered accidentially.) seems to scroll things back and forth. There's the adjacent slides with their own next and previous buttons. Why aren't these UI buttons hidden on slides you can only see the edges of? the "next" and "previous" buttons on the adjacent slides end up sort of broken: I click "previous" on the slide to the right of the one I'm viewing and it sends me to the slide that's to the left of the one I'm looking at. I can see why it's doing this because I can guess what under the button. The whole thing serves only to confuse me (and likely others?) I spent my whole time on the site screwing with the UI, not reading.