Horizontal all the way. Great layout. My only issue is the parts where in addition to the colorful background you added shading. Very hard to distinguish that from the font unless I mad the picture bigger. This is a fairly common issue. But really love the layout other than that.
the only part I have read so far is the interview, and it was great.
Thanks. Yeah, I'm not entirely pleased with reading a few of the pages... I would have liked more time to go back and refine some of the layout to make it easier to read. Unfortunately, I was putting in considerable hours at work and just getting this thing designed was a mad-scramble to make it look good. I'm happy with the book overall but I definitely learned some things to avoid next year. Initially, the text was waaaaaayy too small and what you're looking at in the published version is considerably larger than where I started. Next year, it's going to be even larger. There is simply no reason not to go with large text in an eBook. It's not as if page count is a concern (the current font is 14pt... Next year, it will probably jump to 15pt).