

First time Linux user you mean?
I wouldn’t recommend it, unless you can navigate the terminal well. When you install arch, it installs no desktop environment, only the ability to talk to a terminal.
It’s technically possible and very doable with some googling, but I wouldn’t recommend it.
Weird question, but what does GnuCash do that you wouldn’t get easily from excel? I haven’t used any of these apps and wondering what I’m missing out on.