I would say that Joel Spolsky's video is one of the best ones out there (I used to be a die-hard Excel dev on a trading floor). Other than that, we have a coll

I would say that Joel Spolsky's video is one of the best ones out there (I used to be a die-hard Excel dev on a trading floor). Other than that, we have a collection of open-source Git Excel workbook repositories that might be useful to go through: https://cloud.xltrail.com/ https://cloud.xltrail.com/ Some of them are pretty advanced, others less so.