Just spotted to new beginners guide to PPC from Hal ‘the PPC legend’ Varian….
This is an update to the old video…
Whilst it brings PPC for beginners up to date e.g. ad formats evolution I still prefer the AMAZING 1980’s pie chart of the original. AdRank + costs could also have been detailed in a better fashion for the now (hopefully) more advanced audience.
More basic info = quality score whitepaper
Intermediate info = My understanding and improving quality score post