You should definitely look at the older tutorials as they are structured in a way where they teach you the concepts and rules, not the software. CGCookie’s videos are trying to be software-independent, so there’s a lot of good information in there that you’ll run across in any software. There may be some things that you have to translate between software versions, but the majority of what you learn will be transferable to other software. Solving those small problems will also help with your critical thinking as 3D comes from a technical background (granted getting more artist-friendly each day), so any small, weird things that pop up while working you can fall back on your “debugging” knowledge to help solve a problem, esp. in a team-centric atmosphere.
TL:DR; I recommend going through the old stuff and watching it anyway.
