I completed Syntorial, loved it. Moved onto building blocks, and I just completed a lesson about sus4 and sus2. It seems to me that this is just another way of referring to intervals (I hope that gets even more elucidation as the course continues).
I'm looking to find a list of which intervals go to what. So for example, sus4 can go back to the 3 or 3b chord.
How long can the intervals be? Do they always repeat? And which goes to which? If the answer is too involved, please feel free to redirect me. I just noticed that my creations in building blocks sound a heck of a lot better when I resolve on 3*.