Thanks! I actually just finished the technical side of it this morning. Turns out it was more about doing things like writing conditional text for things like "the figure above" instead of "figure 1.4" since the figure numbering happened in the HTML->PDF toolchain step. I think I have a finished epub and mobi file now, so I just have to figure out the distribution step through Lulu.com now. (It's also made slightly complicated by the rev share agreement, so I can't just go wild with distribution or direct online sales of it.)