Hi, can anybody tell me how I connect my iPad to AppleTV using "home sharing" ? Thanks

Setting up Home Sharing

http://support.apple.com/kb/ht4557

Troubleshooting Home Sharing

http://support.apple.com/kb/TS2972

Apple TV

http://support.apple.com/kb/HT4437

http://support.apple.com/kb/HT5209

http://support.apple.com/kb/HT4352

I dot think it is possible to use AirPlay when using home sharing.

To be honest: I'm not sure what you're trying to do?

Home Sharing shares the content such as movoes, music and photo's.

Are you actually asking, how to view the content of home share on the ATV?