Use Xfce not black arch the ISO is too big for your PC.
No pics from one sentence you can write here by hand.
Upper right read Wiki and click, you want to post me a link to arch wiki?
You want install a DE for advanced user and you do not know how to whoogle or 
?
We do not teach here beginners, not because we can’t, we just don’t have time to explain things that can easily be found on the web.
You should at least know the basics when you install a rolling DE.
We recommend Mint or MX Linux for beginners in the Linux world.
Do not ping with @ the mods, it’s rude.