I have been using Zaino since day one on my S2000. It is exceptionally good, BUT NOT the end all, be all of car care products. If it wasn't for the fact that I've spent so much money on this stuff, I'd have ditched it a long time ago and gone with something just as good and much simpler to use (go to their website and take a look at the "procedure" to get started). Heck, I've used almost every kind of car wax/polish before Zaino came along and I found that a bottle of Prolong car polish was by far the simplest way to shine up a car. (Prolong is NOT the only product of this sort out there.) Most products are good is done one application twice a year (3 times if you live in a harse environment).
-bucket, wash mit, car wash soap (any kind), absorber type of wiper (or fake chamois).
-the rest is just your time.