Sometimes folks don't like to see references to other sites, but this may be an exception. Worst that can happen is that the post gets deleted. Anyway, there is a Campagnolo-specific section on:

Campagnolo

For more general information and history, see:

Campy Only! Campagnolo News, Information, Rumors,

Campagnolo has a lot of information on their web site:

Campagnolo Official website

They also put up a lot of videos on YouTube...

I do know that their biggest 10-sp cassette is a 30-tooth, but the vintage of your setup may make a difference. The factory also says not to mix 10-sp and 11-sp, but I think they tend to be very conservative. There are some professional bike mechanics that drop into that forum, so I would defer to them.