I have been hanging out at wikipedia a lot lately to learn about the sites we will see on our trip. I just pick a topic and search for info on it. I need to start setting a countdown timer or alarm, though, because I just keep following links and get totally lost in all that interesting information.
A few days ago I started at Pompeii and just followed links from there. Before I knew it, an hour had flown by and I had to hurry to an appointment.
Here’s a web page that has links to wikipedia pages that roughly follow the itenerary of the trip.