Tom's book (MBT x3) is pretty "scientific", not like a lot of them, and very good. Being "incomplete" in the "Ambers" is what made you so "helpful" to those stuck there, since you were nearer their level than the Helpers. Yes, many Dimensions, levels...rings, so I've heard. When I first had contact with the "Helpers", they told me that there are infinite & wonderful worlds to explore and amazing things to learn & do. Sigh, So much we don't know...yet.
What are you "struggling" most with, coming back? I would have liked to stay there, in the Light, Home.....but we are down here for a purpose & reason, so we stay till it's our "time" to go. "Life" (here) is so short anyway, like a flick of your finger nail compared to Eternity. I hope you're doing OK health wise, I'm sure, just that's been a LOT to deal with.
Yes, no marriage in Heaven...lol I've had some "help" in times of need from "them"....they can even take human form to do this, amazing! Still would like to hear about the "classes" you take sometime, when you're ready. While looking into some of the things you suggested, ran into a great youtube with "Jeff Olsen", his NDE & would recommend to anyone. So much of what he said about his experience, I experienced during my journey in the Light & maybe you also. Thanks again Rebel