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/
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/
Try this first - 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 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.
If there are multiple apps trying to download at once, only one can download at a time and the rest say "Waiting" until it is then their turn. Try this. Double tap the icon of the Waiting app, and it should resume the download.
How to Solve the Problem of An iPad App Download Stuck on “Waiting”
http://ipadacademy.com/2012/06/how-to-solve-the-problem-of-an-ipad-app-download- stuck-on-waiting
Another thing to try - Turn the iPad Off & then back ON.
If that doesn't work:
• Log out of your iTunes store account. Go to Settings > Store > Sign Out Then press the Home button.
• Then press and hold the Home and Sleep buttons simultaneously and don't release them when it brings up the Turn Off screen; keep holding them until the Apple logo appears.
• After restart, the Waiting should be gone.
Cheers, Tom 😉