How to create a post (article) and more

To create a post you use the menu under the "+" icon and select "Add new link/article/photo".

"Add new post" creates a "microblog". I'm not sure how it works, it's the first time I'm using kbin, maybe it's similar to a tweet.

From what I understand about kbin and fediverse is that it's a combination of reddit and twitter, content-wise. There are various servers where you can create an account but all accounts, regardless of where they were created, can interact with each other.
One way to see content created on other servers and magazines is through hashtags. If the administrator of a magazine (magazine is the equivalent of sub on reddit) wants to include in the list of "threads" and "microblogs" content generated on other servers, it can do so by adding one or more tags on the relevant admin page. In this magazine, for the time being, the tag #androiddev has been included.

Those interested to help customize the magazine by creating an icon and editing the css and js - other than the icon I don't know what can be changed via css and js - can send me a message here.

I created an Android app to be able to read kbin.social content. Initially the app was a simple webview to be able to browse the site in a dedicated browser. Currently it has a few more features, such as being able to inject css and js, a menu with various links to the site etc. You can find the app and code at https://github.com/anemomylos/shell4kbin.