On the second Wednesday of every month, OpenSourcery hosts the Portland Drupal User Group meetup to talk about Drupal and hear a few lightening talks.
These meetups are for ALL levels of Drupal users, from those of us who have only briefly heard of it but are interested in learning more to those of us who know a lot of but are always looking to learn more! Come get involved!
Check out the official Portland Drupal Users Group site at http://groups.drupal.org/portland. Meeting topics are announced here, along with other great Drupal related information.