There is an interview at Inc.com with Philip Rosedale about how he started Second Life, what were his ideas, goals and such. If you’re interested in a little history or the visions behind Second Life at all, you should definitely read it.
Some team members of the German blog Industrial Technology&Witchcraft have produced a DVD, targeted at SL newbies as their main audience. There are videos on it, showing several different aspects of the client and the world itself, presented by the avatars Molly Fellini and Case Schnabel.
The price of the DVD is 14.99€ and it is available on some kind of webshop. There is also a 3 minute preview of one chapter of the DVD available for free so you can take a look at it if it is something worth investing your money or not.
Well, I am curious if they are going to sell them or not; I for myself would just rather download the client as newbie and fiddle with it direct without buying such a DVD. Learning by doing, so to speak.