If I donwload an application from the Internet and it says its for “Linux”:
Then how do I exactly build it? I have to download it and in this case I got a tar.xz file
So I have to extract both the xz and the tar and then I would just run some make file or something?
And then how would I install it then?
You don’t need to install the Tor Browser. It can be run as a Portable App.
Just extract the file, go inside the extracted folder and click on: Tor Browser
It is also in the aur.
The pgp keys is not valid or something so I don’t want to skip checking
Oh I didn’t know, well thanks then
Generally speaking, on Linux you don’t download software from websites.
You look in the repo (pacman -Ss SOFTWARENAME for the search and sudo pacman -S PACKAGENAME for the install ) and if that does not find the software, you can check the AUR (yay -Ss SOFTWARENAME for the search and yay -S PACKAGENAME for the install)
At work, but maybe update your key ring?
sudo pacman -S archlinux-keyring
I think 
I never knew about the search but thanks. I did a quick Google search before this post and like I attempted to download from the AUR bht the pgp keys are not available so I didn’t want to install it without pgp keys.
I thought sudo pikaur -Syyu also updates the archlinux-keyring?
I just updated my system yesterday 
you can also search the repos and the AUR in the web. The tor-package has a pinned comment that should help you:
https://aur.archlinux.org/packages/tor-browser
Right I see, thanks then
Also yay can magically show a list of packages available for you input word.
It’s realli amazing and allow you to select/build/install everything you need from comfortable terminal window.
Try it ‘yay PAKAGENAME’ and enjoy.