It is a series of videos produced by Alan Parsons than a dozen hours dealing with recording techniques and mixing. Full details can be found at the following address (https://www.steinberg.net/fr/shop/accessories/alan_parsons_tutorial_dvds.html).
On paper, the series is very attractive but in fact we are quite disappointed because it is videos for beginner to intermediate level though insightful comments of recording stars bring a definite plus.
Alan spends a lot of time to redefine the basic common knowledge and by the way a lot of pub for Universal Audio and the examples are not detailed enough.
If this type of course you are interested, I suggest you set the "
internal mixing" Steinberg
https://fr.audiofanzine.com/pedago-multimedia/steinberg/Internal-Mixing/avis/
the author is certainly less known but the level of detail explanations and video clips are much better.