We also have video tutorials to get you started: Intro to Video Editing with Blender's VSE, a general introduction to Blender's VSE. Power Sequencer Workflow tutorial, a video dedicated to the add-on.
The libraries used for import/export are only compiled for Windows x64. This add-on will not currently work on other OSes. Files > Import > PSO2 Model Search opens a window to find an import items by ...