Welcome to the Apple Support Communities
As you have a Wi-Fi iPad, you can connect it to your wireless router to connect your iPad to the Internet. If you don't have one, you have to buy it.
If the iPad was purchased 15 days ago or less, you can return it and get a Wi-Fi + Cellular iPad, so you can connect to the Internet using your carrier's network
Complete guide to using iOS 6
Guide to Built-In Apps on iOS
You can download a complete iOS 5 iPad User Guide and iOS 6 iPad User Guide here: http://support.apple.com/manuals/ipad/
Also, Good Instructions http://www.tcgeeks.com/how-to-use-ipad-2/
Apple - iPad - Guided Tours
Apple iPad Guided Tours - Watch the videos see all the amazing iPad apps in action. Learn how to use FaceTime, Mail, Safari, Videos, Maps, iBooks, App Store, and more.
How to - Articles & User Guides & Tutorials
iPad How-Tos http://ipod.about.com/lr/ipad_how-tos/903396/1/
You can download this guide to your iPad.
iPad User Guide for iOS 5