New starter questions please (Tags, subtags, and list sorting)

[TangaJ24]

Hello,

I have only just discovered Qiqqa and I regret having spent so much time studying without having this in my life! Thank you for making Premium free and available to us all.

I have been coming to grips with all the options but I have a few questions:

• Is it possible to create subtags? I am doing a literature review. So I have a tag about methodology and then I want subtags where I can narrow down each type of method used for example.

• Can you colour code tags?

• Is it possible to sort the documents in your library?
  I have documents I've listed as wanting to read it first, but I would just like to organise my list better.

• This is stupid but I have been adding colours to documents in the annotations but it is hard to figure out which colour exactly I used previously because you can't see the name of the colour that was picked. Is there any way around this?

Thank you in advance for all your help!