Go to the Naruto Central website. A link can be found below in the Resources section.
Click on the Media tab, located at the top. This will lead you to a page that offers links to the anime episodes, soundtrack and other forms of media.
On the Media screen, click on "Manga Chapters." This will lead you to a page of hundreds of Naruto manga scans, all the way to the first issue.
Download the manga chapter or read it online. To download it, click on the name of the manga you want. This will then lead you to a page where you can download it. To read it online, just click the "View Online" option next to the name of the manga chapter you want.