Hi Dave There are quite a few materials of an introductory nature at http://www.tdwg.org/about-tdwg/resources-for-outreach/. This includes brochures, PPT presentations (including Gail's), primers, posters that John mentioned, and some neat videos. Most if not all are non-technical. There is also a 'getting started' section of the web site at http://www.tdwg.org/getting-started/. Maybe it would be good BTW to add your presentation to these resource pages? Cheers Lee Lee Belbin Geospatial Team Leader Atlas of Living Australia