Most important: It is a wiki, so you can edit it!
There are language specific wikis and mailing lists.
Besides that each country has its own mailing list.
In 2013, we lost the CryptoParty.org content. You might be able to find some old content on Mirror T (2013-06-03) or Mirror B (2013-05-21). or by downloading the archived dump cryptoparty.org_2013-05-21.tar.gz.
If cryptoparty.in is offline, check https://cryptoparty.is/ for meta information.