@Eleni Palmos as someone who has taken both Workflows training, the fundamentals is all you should really need to do 90% of what will be asked of you when it comes to creating workflows. The advanced goes over some stuff like multi-approver process workflows and scheduling workflows, but those are things you can pretty much figure out on your own. I took the fundamentals and figured those things out on my own, then took the advanced to see if I was missing certain things and my own experience was more than suitable.