1 There are many awnsers
1 a: $ inxi --admin --verbosity=7 --filter --width outputs some system info
1 b: $ uname-a outputs some system info
1 c: $ neofetch displays some more info.
1 d: $ pacman-mirrors --get-branch for branch info.
2 See the two posts linked below, make a post with your findings and settings to get some help.
3 $ sudo systemctl enable cups
To add to this, you might need to enable more. see the wiki on printing
4 Never used unclutter but does $ man unclutter produce a man page for it?
These 2 threads should give you some background on how to ask questions here and how to provide good info to help you help you and in turn help yourself and others: