You may find the following resources useful while installing and configuring your Magento store:
Magento User Guide
Expert Instruction for Launching Your Online Store
New and Updated for Magento Community 1.9
The Magento Community Edition User Guide is designed to help merchants launch successful online stores on Magento Community Edition. Written for store owners and site administrators, this book walks you through the end to end process of installing the software; setting up your site hierarchy, catalogs, and products; and managing customers, orders, payment options, and the look and feel of your site.
Installing and Verifying Magento
Article on Magento's website describing how to install Magento. This article contains information about prerequisites, preparation of the server, installation, verification and troubleshooting.
A big list of articles driven by Magento's community aimed at designers , developers and users of Magento.
Stack Overflow is a question and answer site for professional and enthusiast programmers. You will find hundreds of answered questions to help you solve virtually any issue on Magento's programming.
Magento Stack Exchange
Another good resource for finding answers on Magento related issues.