Fix Typhoon

#3D1D was a lot of work, but now the real struggle begins: turning Typhoon into a better book.  I know you've all done a lot for me already, but I'm going to ask one more favour: help me diagnose problems.

When you were reading it, you probably had moments where you said "Oh dear, that made no sense."  I can't always see where those moments are, and if they don't get fixed, it will ruin the experience for any future readers.  So here's my request: tell me what didn't work for you, what didn't ...