Access Expert Level 21 is just about finished. I'm recording the Intro and Review lessons today and the course should be up on the web site tonight. It should be available online later today or tomorrow.
Expert 21 covers more with importing data into Access, setting up your database for a multi-user environment, splitting your database into front-end and back-end files, and record locking. Lots of good stuff in this course if you have any intention on sharing your database on a network.
I'm going to try to get X22 and X23 out as soon as possible since lots of people have been asking for some additional lessons pertaining to importing/exporting data. These lessons will cover fixing bad data that's given to you, vendor price sheet changes, creating a remote data entry database, downloading and importing bank transaction data, importing XML from a web site, and lots more.