And remember to clean from top to bottom. The dirt falls down, not up. After that, apply some Meguiars wax, which is a charm, but another good option is Zymol. For touchups between waxing, be sure to use a "spray on" wax. I think there's some cheap stuff called "Ice" at the Autozone/Pepboys/Advance/Oreily's that apparently works well.
Oh, and the two bucket system works very well. Also, if you have "hard water" in your area, a filter for your water hose will eliminate pesky "dry" spots (usually mineral deposits), and washing in a shaded area helps keep your car streak free.
Yeah, waxing and sealing is tough... That's why you only do it once a month.