USE A HAIR DRYER TO GET RID OF WATER RINGS
So, you forgot to use a coaster once (or many times) and now your nice coffee table is covered in white water rings from the bottom of your glass. Luckily, you can banish them them with a hair dryer. Blast the stains with a low heat setting until they start to disappear. When they’re gone, rub a little bit of olive oil on the spot to recondition the wood.