I just recently finished co-authoring my first full-length book. It is an extremely technical medical manual, and my co-author and I decided that we needed to do the indexing ourselves, both to aid in document debugging and because, as the authors, we understand the material in a way that even a medical indexer would not. I bought this book, read it twice and underlined it, took a deep breath, and then plunged ahead. We made a couple of newbie errors early on, but Mulvany helped keep us on the true path. And the index turned out very well.