The archinstaller script is pretty good if you’re just needing a basic setup. Ive been really happy with a btrfs partion from the recommended disk layout, then using btrfs snapshots + grub bootloader to load from snapshots. You can also create a hook on pacman so that you create a snapshot when you upgrade packages.

Since you didn’t mention your experience, id recommend looking at the various desktop environments so you know which one to pick during install. You can ofc change later.

And read the arch docs. They are very good and have a lot of time invested into them. If you find you don’t have the patience to read them then you’re probably going to want to look at a different OS. Good luck!