Here is a great and complete series of tutorials for absolute beginners on WordPress.

• Beginning With WordPress: Deciding Between WordPress.com and WordPress.org
• Beginning With WordPress: Getting Started With Self-Hosted WordPress
• Beginning With WordPress: Installing WordPress Manually
• Beginning With WordPress: First Steps With Your New Website
• Beginning With WordPress: Preparing to Customise Your Theme Using a Child Theme
• Beginning With WordPress: Editing the Look of Your Site With CSS
• Beginning With WordPress: Editing the Structure of Your Site
• Beginning With WordPress: Customising Our Site?s Functionality Using functions.php