Do you want to get User Guide/Manual of the first CDMA iPhone?
You can download the iOS4 user guide from here.
This iphone iOS4 User Guide is a 273 pages pdf document with 29 Chapters about iPhone at Glance, Getting Started, Basics, Syncing and File Sharing, Phone, Mail, Safari, iPod, Messages, Photos, Camera,,YouTube, Stocks, Maps, Weather, Notes, Clock, Calculator, Compass, Voice Memos, iTune Store, App Store, Game Center, Settings, Contacts, Nike + iPad, iBooks, Accessibility and Support.
This is the official Apple iPhone 4 Verizon User Guide in English provided from the manufacturer.
The iPhone User Guide can be viewed on iPhone by tapping the iPhone User Guide bookmark in Safari, or by installing the free iBooks app and downloading the guide from the Bookstore.
You can add an icon for the guide to the Home screen by tapping +, then tapping “Add to Home Screen”.
Read FAQ for Verizon iPhone to get clarification about your Verizon Iphone related questions.
And, you read about unlocking and jail breaking an iPhone here.
You can download below useful iphone manuals also freely from Apple site.
iPhone 4 – Important Product Information and Safety Guide (CDMA Model)
You can get here the manuals and user guides for various devices including the iPod and iPad.