OliverCharles has a series of video screencasts about using Picard, which you may find helpful. All the recorded screencasts are below:
Working With Picard, Episode 1: Basic Tagging
This first screencast is very basic - but if you are new to Picard, this might be all you need to get organising all of your music! In this cast we go through how the interface works, how you can lookup files, and how to work with clusters.
Ideas for future screencasts
Got an idea for a future screencast? Let us know by adding it below!