Is there some way i can examine the resources that the computer is using (e.g. ram/cpu/disk usage) in one place with a gui?
Please have a look here: https://wiki.archlinux.org/title/Applications#System
Hopefully you’ll find something to your liking.
several. If you use KDE, there is
You are in luck because there are probably literally a thousand options to choose from. The list from @pebcak’s post was great, and a great place to start, but is also a drop in the bucket.
What DE did you pick? It probably already comes with one.