Video tutorials or PDF's to brush up?

Hey I am a old user of Hog PC back in the day then went to Light Jockey for a bit and MagicQ. My question is there any videos online or pdf tutorials / quick user guides so I Can brush up with whats new in the world of hog. I watched all the videos on the site, and I did a search but so many unrelated things came up. Any links or recommendations? There was a great one someone made unofficially a few years ago....

Thanks all knowledgeable Hog'ers.