You can do a quick Google search and find many helpful results. Some websites you might want to try would be Amazon, eBay, Etsy, USA Coin Book, CoinTrackers, JM Bullion, and Grey Sheets, to name a few ...
But your basement and attic may be bursting with possessions you no longer want, and you might be surprised by the amount you can pocket if you know the best ways to sell your stuff. "I find ...