Terry Pratchett: conventions, guilty pleasures and orang-outangs

If you haven't heard of Terry Pratchett or at least seen the rows of Discworld books monstering the fantasy section of your local bookshop, then welcome to Earth.

You're unlikely to know Pratchett, who has sold about 40 million books worldwide, is in Australia this weekend for the first Australian Discworld Convention.

It's also possible you're not totally au fait with the role Pratchett has played helping amateur dramatics groups save the orang-outang, or how reading Discworld books is one of life's guilty pleasures.

Read on to become enlightened!