Do you mind if I list some of the questions that I've had and still have and you could incorporate the answers into this post? No need to answer them one by one, but you may see a commonality that may resolve a few of these questions in one go with a simple explanation.
What is kbin? How is it different than Lemmy? How is it the same? Why do I always see them mentioned together?
kbin vocabulary: What is a magazine? What is a thread? What is a comment? What is a microblog?
What is a boost? How is it different from an upvote?
Is there a mobile app?
What is a "federated server"? What is an "instance"?
What's all this about "federation" and being able to see content from elsewhere? Where is elsewhere?
On this site (for example), what does it mean when I see feddit.de, squabbles,io, or readit.buzz?
Do I need an account on all of the websites mentioned above? If not, how do I see content from the others on my kbin homepage?
what is the relationship between /news on one site and /news on another?