Note: When the new iOS 4.2 operating systems is released (and the subsequent wave of application and accessory updates follows) some of the features and UI (user-interface) patterns will change.
Each iPad came with a small white packet. That packet contains a couple stickers, a sim removal tool, and a standard FCC type product pamphlet. It also contains a 3×5 type card with a photo of the device. The front of that card points out the physical controls; the back of that card lists the initial 4 steps needed to get started as well as the URLs for more information.
If you install the free iBooks application, there is an available iPad User Guide (free from the bookstore). It’s a 309 page e-book, and fully searchable. Also, the iBook application includes the ability to set bookmarks. This would be the best solution for the TSD folks to set up, as it would ensure the users always have a complete reference guide available with the device regardless of their connectivity situation.
Apple’s website has video guides to all of the features: http://www.apple.com/ipad/guided-tours/
There’s also a more “traditional” type user guide in the form of a 19MB, 154 page PDF. This PDF can be loaded into the iBooks application’s “library” (printing it out would kinda defeat the purpose of having a technology like the iPad).
The Apple iPad Enterprise Deployment Guide might be of interest to the IT folk, probably not so much for the users. It is a 1MB, 90 page PDF. In our organization, most of what is covered in this document is being done via the centralized McAfee EMM (formerly Trust Digital) platform. While this document would provide an overview of what iPad features can be managed, the IT folk should not try using the configuration tools/profiles described (as that would create conflicts with the TrustDitigal server).
And, yes, there is an “iPad for Dummies” title on Amazon. The Amazon page also identifies several other similar books.