Here are some additional webinars you might be interested in watching.
The U.S. Citizenship and Immigration Services is offering several webinars during March/April/May. They are available on the History and Genealogy Webinars page of the website. Topics include: History Library and Catalog Services; Genealogy Program Introduction; Guide to I&N History Research; and "Records Found" Case Studies.
The Friends of the National Archives - Southeast Region is also hosting a variety of webinars throughout the year. You can review the various topics and register for them on the group's webinar page. Upcoming topics include: Learning about Alien Files; Introduction to Military Records; Reporting to Yourself: Keeping Track of What You've Already Done; WWII Home Front Records; Federal Land Records; Civil War Medical Records and more. Though many have active register now links, for others you will have to visit the page again to see if registration has opened up yet. Though I am not positive, I think these webinars will be applicable to any region of the National Archives.
See you soon at the Mt. Clemens Public Library!