[Dantilla]

A big key is to stick with what you know.

A friend who is a real estate appraiser also checks every pawn shop around for guitars and amps. He makes sure they are up to snuff and resells them on craigslist or eBay. Always has a half-dozen or so guitars, has fun playing them, and makes extra money on the side.

I couldn't do this- I don't know a good deal on a guitar from an overpriced one (My Fender Strat came from one of his pawn shop acquisitions)

Another guy who knows I've made money with cars called me up one day, and asked why he couldn't sell the cars he "stole" at an auction. The problem? He bought boring cars. One of them was a Toyota Camry. Not exactly a hot commodity. With thousands of average cars for sale, that's no way to turn a profit.

So..... Stick with what you know. Or get burned.