Previous You Tube Videos.

[Panlumix]

Why have the previous You Tube videos been deleted?,some of them had far better tips,i.e. global cloning etc:

These could have still been retained as well as adding the new content.

[firstdefence]

Have you looked here: https://affinity.serif.com/en-gb/tutorials/photo/desktop/

[Granddaddy]

http://www.miguelboto.com/affinity/photo/video-tutorials/ has an organized list of the hundreds of old videos with links to Vimeo. I tried several and they still work. They should have been left available through Serif until they replace all of them with videos for Ver 1.7. Serif only has 64 AP videos on their official site at https://affinity.serif.com/en-us/tutorials/photo/desktop/ and 65 at 

I always download any videos I'm interested in. I learned to my dismay long ago that it is unwise to trust any company to provide long term availability of online resources. I was involved in one situation where an organization had posted many lectures to a video site. The video site decided after a year or so that they no longer wanted to provide that kind of lecture service, being more interested in high traffic kitten videos or something. Just like that the organization's account was deleted. Unfortunately the organization had not properly archived their videos and they were lost, except for the ones I had downloaded and was able to restore to them. Companies are not libraries. These days my experience is that you cannot trust even libraries to to preserve the record of the past. Each of us must take responsibility for archiving those things we might need in the future. 

I use the free, open-source Clipgrab for downloading videos. https://clipgrab.org/ There are versions for Windows, Mac, and Linux.