How do I properly care for my PS3?

I'll be getting a PS3 soon (just waiting to see if the price drops in the near future, if not I'm buying one)...but just a couple questions.

People say dust can be a problem. I assume this is referring to getting dust in the system where the fan is? How do you properly remove it? Just with a dustbuster?

Proper ventilation I hear is a big deal. I'm not planning to cramp my PS3 but it is going in a space where it'll be about a foot from the wall...hope that's okay? I also don't plan to play for more than an hour in a row so hopefully it shouldn't be a big deal.

Other recommendations for how to properly care for your PS3? Is there info in the manual?

Thanks.