Installing WordPress is generally a breeze, and we've prepared a few documents to guide you through every step of the process.
The world-famous WordPress installation. Start here.
The system requirements for WordPress. This actually lives in the About section, but we thought we'd link to it here just to make things easy for you.
It's hard to explain but easy to understand. This is for those of you who don't want to clutter up your root directory with WordPress files.