I just recently uploaded a video with my friend on a skirmish walkthrough. The "Siege of Gondamon" Skirmish is perfect for lvl 20s to learn about skirmishes. Me and my friend recorded a video to explain the dynamics for new people to the game.
This video is meant to help, not be criticized. If you could, give us a like, sub, or helpful or nice comment, so that way we can counter-act the trolls.