www.detailersclub.com and
www.autopia.org
I started detailing cars in 1999. After trying all sorts of waxes and polishes (Meguiar's Mirror Glaze, Consumer, and Detailer's lines), Klasse, Pinnacle, Blackfire, Platinum, Armor All, Turtle Wax, Automotive International, Eimann Fabrik, and so on.) I have settled on the usage of Zaino Bros. system for car paint sealant, glass polish, tire dressing, plastic polish, and interior leather cleaner and protectant.
The key to keeping a finish great is prevention and protection. I always have a ready clean kit in my trunk for bird bombs and such. I park my car away fromcivilization at the mall and other parking lots to avoid door dings from other drivers.
I actually have spent more money on towels, polishers (I have a Makita 9227C and a Porter Cable DA polisher), polishes, waxes, shop vacs, and all sorts of detailing related stuff than flashlights. But a $20K investment deserves it (2005 Mazda Tribute.)
Read up on the forums, check up on Autopia's car detailing guide book/e-book to get you started and keep your new car shining!
Jason