I have a few directions of the welcoming materials I've been going with, both for people who are adjusted to world or dimension travel, and for people who are completely new to this.
I agree with the above conversation about technology needing a detailed overview to help and tutor those from worlds without it. Admittedly on my end, I had no idea that would even be a challenge at first, so attempting to help people with it has been just an exercise in fumbling along. Structure will feel good to add into that.