I've finished a first draft. If anyone has a moment to give feedback, I'd really appreciate it, and of course I'll be happy to give feedback on other people's PDFs when they're uploaded.
This is a well-reputed free file hosting thing, but it's the first time I've tried it, so tell me if there's any problems.
[Edits: Damn! Uploaded the wrong file before. This is the correct one.]
Graham