Photoshop Top Secret is an old tutorial but make no mistake it is still extremely relevant today and is miles better than most tutorials I see out there today.
Adobe dropped support for Flash and it is blocked in most browsers and this tutorial was made using flv files that needs a flash plugin for its video player

I tried many things but couldn't get it to work on any browsers at first, Flash is dead ...

So I re-encoded all the FLV videos to MP4, and wrote a Python script that adds a bunch of HTML and javascript code to bottom of each page of tutorial that removes the Flash video player and replaces is with the standard HTML5 video player. Re-encoding the FLV files made the whole tutorial smaller, the size is now less than half of the original and the files are in normal folders now, not in a DVD ISO file.

This tutorial now works in 2021 and hopefully beyond, The only issue is, when a you watch a video, it won't automatically go to the next one, which is not a big deal at all. You need to manually go to the next video.

My connection is slow so be patient and download this overnight until there are more seeds available.