The ePortfolios pilot, using PebblePad, is starting about now. There are perhaps 20 students from the Law and Criminology department who have volunteered for the pilot, and we'll be putting sports students on next.
The only training resource I've needed to create is a simple PDF document called PebblePad: First Steps because Pebble Learning provide some decent resources on their web site.
Finally Philippa Butler from the Massey University College of Education, New Zealand has created A Review Of The Literature On Portfolios And Electronic Portfolios which goes into much more depth than I did. I've only scanned it, but it looks like another useful perspective which references a lot of the research around portfolios.