Looking for a reference system for "Non Actionable Items" - eg's top

- 7 things to do when looking for a new job.
or
-Ideas you may have to market a new website
or
-Things you must remember when publishing a book

Any suggestions? David Allen mentions using a reliable system to reference important information to refer to later.

As of now i am using Omnifocus for my GTD lists on my iPhone, Mac Desktop and Mac Laptop. I am looking for software that integrates seamlessly over these platforms