I enjoyed this book for what it is. A description of the siddhas and some of their known possible factual information behind the stories told about them. Interesting read. A good introduction to the Mahamudra masters without specifically focusing on practice today.
I was really looking forward to this book, hoping to pick out some insights into the ways in which the Mahasiddhas practised. Of course I learned a lot, but it really felt like a haphazard jumble of tales, some with pretty much no point to them. I would have thought that some sort of chronological order might be sensible, and appreciate that ins't entirely possible due to doubts over some of their dates, but still it seemed funny to first read about one Mahasiddha being the teacher in someone else's story and later read their full story.
The biggest thing I took from this book was the variety of different ways of practising and the degree of adaptation of practice to the individual student.
Best overview the 84 Mahasiddhas available. Superior to "Buddha's Lions - The Tales of the Eighty-Four Siddhas". Splitting each Mahasiddha into a story, practice commentary, and historiography makes each section easy to read and parse.
A good introduction to the Buddhist Tantric literature.
Thorough but repetitive, though I suppose the stories are supposed to be that way, because they're all more or less the same story. The historical bits are laughable, but I suppose there's nothing you can really do about that. If any of these stories were true then India should be nothing but Dakini paradises right now.