As a designer and developer, I have to look up a lot of information in the rules. For me, it’s usually faster to jump to Paizo’s PRD (Pathfinder RPG Reference Document), an online indexed html reference of all their core books, than to grab a specific book and page to what I’m looking for.
To make it even easier for me to navigate, I created a chunk of html with hotlinks to each class, the skill index, the feat indexes for each book, the spell lists for each book, the monster lists for the first three Bestiaries, and so on. And I even added similar links to the 3.5 SRD, just so I could make a comparison to an older version of the rule.
And I made that page my browser’s home page, so I can quickly access it.
I’ve posted earlier versions of it before, but it’s been about a year since I updated it. The newest version is linked (it’s a ZIP file of just my simple html file), so download it and unzip it, Then bookmark the resulting html file, and you’ll have a handy index for several often-used parts of the Pathfinder RPG rules.
I hope it’s helpful to you as a player, GM, designer, developer, or editor. Enjoy!