After going to the archive and downloading the version specified in the video I attempted to create a 3D package. It responded with an Invalid template error. I ended up downloading the oldest version that was listed on the official downloads tab. It is 2020.3.43f1. Hoping there will not be too many problems with using the newer version
One thing I have found is Unity has changed its asset store. There is no longer a tab and it is all web based now. I muddled my way through, but couldn’t tell you what the exact steps were.