Getting used to Hive - questions coming to mind

As I'm getting used to this new social media, questions come forward mostly as I enter unknown territoty, not familiar to day to day facebook users.

So far it looks great. I hope I can get answers to my questions.

1. How, where and whom do we ask questions (for support) on Hive?
This is the very first question itself. I haven't come across any help page or something like that. For a newbie who's come straing from social media 2.0, it is a bit tough to know where exactly to ask questions. Should one post questions as there are no official contact/support system in place?

2. Where are the photos and videos stored?
If I am not wrong, blockchain doesn't store any photo or video. So, where are the photos and 3speak videos stored?

3. Copyrights of contents?
As far as I get the basics, the content once uploaded cannot be deleted. That is, it becomes public domain. In that case, can the same content be used elesewhere commercially?
Does the content come under GNU GPL?

4. A controversial question may be, does freedom from censorship include the freedom to edit/delete content?
This may be a very controversial question, but I hope the curators/anyone who knows well about this, can answer.

Thanks everyone.
I still don't know any direct way of asking a question. I guess tagging topic/communities in a post serves the purpose.