I been looking around Hubski for a few minutes trying to understand how this place works and I came to the conclusion that in short this is a mix between reddit and twitter in the way that instead of sub forums there are hashes.
Is that correct or I'm missing something? (I know that it has a lot of filtering functions and other stuff, but in short, is like that, right?)
Yeah, that is a comparison that is often made. Check out the primer for insight in to additional features/functionality. Welcome!
This link explains a lot about hubski, is there any way I can save or tag the page?
Think of Tumblr! You follow people not subreddits (though you can follow tags), tags are essentially freeform and unmoderated, and clicking the circledot reshares the item with those who follow you. Thankfully, comments are threaded and centralized, and the focus is on the conversation and not easily resharable content.