A close friend of mine is putting together a blog soon and he's going to be publishing several free SEO tutorial videos (no guru/upselling BS). He's asked me to try and get some feedback/suggestions from you guys. So, when it comes to SEO - what topics do you think should be made into a video? It can be anything.. maybe you're looking for a video walkthrough on a particular subject which you haven't found yet.. or maybe you're looking for a video on a subject which you just want to learn more about.. I've started him off by asking him to create a video about creating PBN sites. Any more suggestions?