I would like to use SharePoint 2010 Calendar Web Part, but I need event registration functionality. How can I accomplish this using the out of the box Calendar Web Part. Does anyone have any ideas on either developing code to do this or using a 3rd party solution (either a 3rd party WebPart or redirecting to a 3rd party site to handle the registration). Basically looking for ideas. Thanks for any provided.
You can get some basic functionality from the base Calendar type and a custom form for adding items to the list.
However, you may want to look at these as well.
https://www.nothingbutsharepoint.com (search for Calendar, quite a few articles)