Glancing at the forums, I can’t help but notice around 90% of recent threads are posted under the “I Need Help” category. No doubt there are many new users, but it does suggest there isn’t enough documentation at present and perhaps more usefully video tutorials.
One suggestion I would make is to check out the free tutorials by @Eldar at https://store.eldargezalov.com and then move on to the Core Training Videos that currently include 60 tutorials with free upgrades for life as Blocs evolves.
The good thing about these videos is that they will explain the basic logic behind Blocs and the way it works, particularly with custom classes. I really struggled with Blocs for a while, despite having used both Freeway and Rapidweaver in the past, but the videos were very useful in making that step forward, though I’ll freely admit I’m still learning and need more hands on experience.