Amazon makes it fairly easy to list and sell old books, games and devices on its marketplace. You can make more than just a few bucks If you have pricey textbooks from college. Be sure the books are in good condition. You'll get negative reviews if you attempt to sell books that are falling apart or games that are scratched up. Remember, be upfront about any defects, no matter how small they might be and no matter how few people might readily notice it.
Diligence. In this industry, the line between scams and honest businesses is blurry, so you need to do your homework before accepting a position. Call the Better Business Bureau in your area to find out if there have been any complaints filed against the company, and do an online search on their name. Alpine Access is a well-respected company in the field, and Call Center Careers is a great place to look for legitimate call centers looking to hire.