Questions on Character stats

Hi, I haven't found this anywhere:

levelling up and choosing certain abilities seem to change my character stats

(dex, cunning, etc.) but where can I see this?

Not to mention, what these stats do EXACTLY (for example +5 on attack etc.)

I would be already happy to understand the basics.

Currently I am level 17 but I can only see the three standard stats (10 / 10 / 10)

and what are the core stats then? only symbols. Probably Health, attack, defense.

But this does not make sense --> for example, aren't there several categories for defense?

e.g. def. against ranged attacks, etc. etc.

And where can I find a list of the keyboard buttons for group orders?

(Come here! Thank you! etc.)

I have so many of these questions when I am playing and it is a little disappointing that there is no manual or

something.