I've just bought the new ipad, I've selected my wlan and it is in this page from more than 40 minutes. Is it normal? could you help me?

Try restarting the router and / or a Reset [Hold the Home and Sleep/Wake buttons down together for 10 seconds or so (until the Apple logo appears) and then release. The screen will go blank and then power ON again in the normal way.] It is app and data safe!

I've selected my wlan and it is in this page

Don't understand your question.

You can download a complete iPad User Guide here: http://manuals.info.apple.com/en/ipad_user_guide.pdf

Also, Good Instructions http://www.tcgeeks.com/how-to-use-ipad-2/

Apple - iPad - Guided Tours

http://www.apple.com/ipad/videos/

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

http://www.iphone-mac.com/index.php/Index/howto/id/4/type/select

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

http://itunes.apple.com/us/book/ipad-user-guide-for-ios-5/id470308101?mt=11

 Cheers, Tom 😉