@Josan - You are not alone, as MANY of us share your frustrations.
Unfortunately, the Pinegrow team has made it very clear that their videos and documentation are NOT a priority, and instead prefer to answer your questions one at a time as demonstrated in this thread. They have also stated that they have no intentions of updating their video series even for the next version (v7)! (NEW Complete Video Series for v6/7? 🤞🏼) So we are all stuck with their videos from over 4 years ago for at least the next two to three years. That is of course if we finally get lucky with version 8.