Just the first screen and then not the subsequent screens depending on where you click. I clicked around trying to figure out what to do and got to what looked

Just the first screen and then not the subsequent screens depending on where you click. I clicked around trying to figure out what to do and got to what looked like presentation slides with a prev/next links. I just saw text ("Doherty Threshold") and a meaningless graphic. Clicking on the screen does nothing. I didn't realize you were supposed to scroll down for more text, I just didn't see the scrollbar and I guess I wasn't looking for it because the page looked like slides.