Legacy Family Tree has a list of “archived” webinars that were recorded during the live presentation and can be viewed/listened to at your own convenience – they are worth checking out.
Geneabloggers, a blog with the primary purpose of listing available Genealogy Blogs, also has a calendar that lists upcoming webinars, complete with dates and links to the webinar. Look for it under their Upcoming Events menu.
Family Search .org has made 140 Free online video classes available. There is a menu on the right side that lists categories of classes. You have to scroll down within those categories.