I'm curious what you mean by "community package installer"? If you're referring to Yaourt, that is an unofficial, third-party wrapper script that is unsupported by the Arch Linux developers and isn't required by any means. It does add some convenience for building packages from the AUR (Arch User Repository), but it's much safer to actually examine those PKGBUILDs to make sure they're sane. You also shouldn't need it for regular community repository packages, as those can be installed via pacman just fine.

If you do want something from the AUR, are customizing one of the official packages, or are trying your hand at packaging something else, editing PKGBUILD files and using makepkg manually is pretty straight forward once you've done it once or twice.

The community is very helpful and responsive...on the forums, mailing list, and on IRC. Feel free to stop by if you ever want to give it another shot and get stuck.