Today I wanted to create the basic HUD for the game, but ran into some problems and more questions.
I used to have that kinda feeling when I want to do something before I learn about it. So my advice is that if you feel the same, go and find some tutorials, read docs and educate yourself first, it well worth the time.
So I went through Unity’s great tutorials: https://unity3d.com/learn/tutorials/topics/user-interface-ui
Now almost everything is clear and I created this for first:
I used http://kenney.nl/assets for the icons and sprites. There are some free contents you can use in personal or commercial.