Q: Is this a "re-finishing" or normal care thing? For a re-finish, sand with 320 grit paper and use the new danish oils, they are almost fool-proof. For normal care, http://www.woodworkingshop.com
(Klingspor's) sells beeswax (light and dark) Myland's Wax, Blue Label Paste Wax, BriWax in 6 colors, and Craftsman Polish, and more. Good wood care products aren't easy to use (just like the best auto waxes), but they don't need to be used as often. There are also many, many finish "restoration" products sold by the woodworking houses to take care of scratches, scrapes, water-rings and so-on. Woodcrafters and other woodshops are more than happy to help you choose and use their products. Just march right in to one and say "I'm not sure what I need." and they'll bend over backwards to help you. If you can make it during a weekday, they won't be as busy as weekends, and will have more time to spend with you. A good paste wax applied with a soft cloth and brushed (AND BRUSHED) with a good natural bristle brush then buffed with a lamb's wool pad should last over a year, if dusted with a Swiffer (tm) duster at least weekly. Please don't use spray "furniture polishes" or most you'll find in a supermarket. Most of them contain mineral spirits (paint thinner) as a main ingredient and obviously that's not good.