The best place I found for information and community was the Dual Citizenship Facebook Group. The bad part of that is it's on Facebook and Facebook is the devil. My personal experience was that I used "Danger" as my middle name to be funny and Facebook wanted a copy of my driver's license. Working in IT, I've very aware that FB is just a blog that's programmed to sell you to advertisers. Enough of my rant.
Now, I use Reddit for community, and decided to create the wiki and this site to share my story. There are two subreddits, r/DoppiaCittadinanza, which is mine, and r/juresanguinis which looks like it was just reopened around May of 2022 after being closed down for a couple of years. There's a good amount of people there helping each other out.
The Facebook group does have, and makes it a condition to your inclusion into the group, you must read the Units. There are unit set up in the group that explains a good 80% of everything you need to know. Their Units are derived from this website:
Albeit, this website is no fun to read, it is a wall of text, but it has all of the data that you need to get started. Otherwise, I suggest asking a question in Reddit. I'm sure someone, probably me, will answer your questions.