Recently, legal technologist extraordinaireTom Mighell authored a book entitled "iPad in One Hour for Lawyers" (published by ABA) and an accompanying blog entitled iPad 4 Lawyers. Although I'm not an attorney, iPad 4 Lawyers has become one of my favorite sites to assist with selecting apps, helfpul tips and tricks and in general improving how I incorporate my iPad into my work day. The most recent posts on the blog cover options for hosting meetings from your iPad; handling zip files; encrypting your backups and managing files.
Attorney or not, the blog and the book are definitely recommended for anyone new to the iPad or anyone who wants to learn to use it more efficiently.
You can also follow Tom on twitter (@TomMighell) and subscribe to Tom's podcast with Dennis Kennedy – The Kennedy-Mighell Report.