This resource is a great read for anyone: http://www.jeep4x4center.com/jeepjam...boreeGuide.pdf
Air down those tires, I'm sure others will chime in here but the usual is 12-18psi.
As far as soft-top care, go with Bestop cleaner and protector (sold in kits too). Also I've heard that Marine-grade vinyl products work well too. Bestop is the company that makes the tops for Jeep to install from the factory (if memory serves).