Comment by Sesse__

> now it feels overwhelming to have to try to grasp

Here's a dirty secret: It's just like IPv4, except with longer addresses and slightly different autoconfig. :-) (Well, you don't have the legacy of classful addressing and non-contiguous netmasks and stuff, but I don't really think most people care much about that in the IPv4 world either.) Getting up to speed is, thankfully, simple.