Brigham Young University (Provo) offers free live webinars broadcast from their family history library on a large variety of topics that may interest everyone from the beginner to the more advanced researcher.
The live webinar schedule and information about how to join may be accessed here:
https://fh.lib.byu.edu/classes-and-webinars/online-webinars/
In addition to providing a large number of links to past webinars, the BYU Family History Library also provides a set of links to other websites that host webinars on various genealogy topics. You may access that page here:
https://fh.lib.byu.edu/classes-and-webinars/online-webinars/webinar-recording-index/