From ArchWiki

[edit] Hardware

Installing and configuring hardware devices.

Highlights: Allow multiple programs to play sound at once, Powersaved

[edit] Kernel

This subsection contains articles on how to compile/modify/boot the Arch Linux kernels.

Highlights: Custom Kernel Compilation with ABS

[edit] Networking

Setting up and maintaining network devices and networks.

Hightlights: Access a windows share, Networkmanager

[edit] Security

Securing the system. Resources on system and network security, and recovering from security breaches.

Highlights: Groups, LUKS Encrypted Root

[edit] Software

Package and repository management, installing and configuring system software components.

Hightlights: GNOME, KDE, Debug - Getting Traces