Recently at the CFUnited conference several users expressed surprise that ColdFusion has printed documentation. Since we don't include it in the box, and apparently we don't even include a card that says where you can go to order it, there are those who think that Ben Forta's books are the only thing available.
This is most definitely not the case! Since CF 5, the ColdFusion documentation has been updated and rewritten quite a bit. The current documentation is really very good. Certainly if you need to read up on Event Gateways or ColdFusion components, those chapters will take you from 0 to 60 in no time.
So, you you need to have a printed book by your side (like I do) whenever you are coding, you can order the complete CF doc set from Macromedia at cost ($150). Start at the documentation page or go direct to the US online store.
Of course the entire content is available online at LiveDocs.