So I passed my Advanced Open Water today. The Advanced class is actually much more fun than the regular Open Water because you don't have to do the hard stressful stuff like taking off your mask. You just work on your buoyancy and compass skills basically. And you get to swim around.
Those upward-pointing arrows are where my "ascent warnings" chirped at me from my computer. That means I was going too fast and needed to slow down. The exclamation point at the beginning of the dive is a "ceiling error" and I'll just tell ya, I don't know what that is. I should find out.