I installed IOS8 And the App Store doesn't work

The Complete Guide to Using the iTunes Store

http://www.ilounge.com/index.php/articles/comments/the-complete-guide-to-using-t he-itunes-store/

iTunes Store: Associating a device or computer to your Apple ID

http://support.apple.com/kb/ht4627

Can’t connect to the iTunes Store

http://support.apple.com/kb/TS1368

iTunes: Advanced iTunes Store troubleshooting

http://support.apple.com/kb/TS3297

Best Fixes for ‘Cannot Connect to iTunes Store’ Errors

http://ipadinsight.com/ipad-tips-tricks/best-fixes-for-cannot-connect-to-itunes- store-errors/

iOS: Changing the signed-in iTunes Store Apple ID account

http://support.apple.com/kb/ht1311

Try this - Reset the iPad by holding down on the Sleep and Home buttons at the same time for about 10-15 seconds until the Apple Logo appears - ignore the red slider - let go of the buttons. (This is equivalent to rebooting your computer.) No data/files will be erased. http://support.apple.com/kb/ht1430

This works for some users. Not sure why.

Go to Settings>General>Date and Time> Set Automatically>Off. Set the date ahead by about a year.Then see if you can connect to the store.

 Cheers, Tom 😉

stop cutting and pasting....if you don't have a direct answer stop giving people things to do that will NOT fix their problem....

http://video.about.com/compnetworking/How-to-Set-Up-a-Small-Office-Network.htm