Scott Chacon has created a concise and user-friendly reference site, gitref.org, aimed at simplifying the learning process for Git users who find the comprehensive Pro Git book overwhelming. This site organizes the most frequently used Git commands into commonly needed tasks, providing a reference table on each page to facilitate easy navigation. Users can either look up specific commands for a quick refresher or go through the site as a continuous tutorial, making it a versatile tool for both beginners and those needing a quick reminder on Git usage.