Julian Tosh, an I.T. systems administrator in Las Vegas, for example, lets friends and family buy items on his Amazon wish list and pays them back in bitcoins. “This works well as long as I need stuff,” said Mr. Tosh, who also presides over a Wednesday “Bitcoin Lunch Mob” in Las Vegas, which gathers to discuss and trade bitcoins.

But maybe you don’t personally know any bitcoin enthusiasts like Mr. Tosh or the Winklevoss twins, Cameron and Tyler, who own around $11 million worth and have filed papers with the Securities and Exchange Commission to form a bitcoin investment trust. If so, you might try localbitcoins.com, which lists people in your area who are willing to exchange bitcoins for cold hard cash. The market price Tuesday afternoon was $107 for a bitcoin. Be sure to check out sellers’ profiles and reviews to make sure they are reputable. And, of course, it’s always a good idea to meet in a public place to make the transaction.

Bitcoins can be easily transferred and stored using a digital wallet app on your Android mobile device. Popular wallet apps include BitcoinSpinner and Bitcoin Wallet. There are no iOS bitcoin wallet apps and Apple did not respond to e-mails seeking an explanation. But Blockchain has an online wallet service that you can access using any Internet-connected desktop, laptop, tablet or smartphone.

You can also get bitcoins through Mt.Gox, the largest bitcoin exchange and where the currency is traded as a commodity. But it’s a cumbersome and lengthy process, requiring wire transfers and scanning identity documents. The company, which is based in Japan, also charges a 0.6 percent fee for all transactions.

Keep in mind that the United States Department of Homeland Security in May seized Mt.Gox’s United States accounts, saying it misrepresented the full extent of its financial operations. The company did not respond to requests for comment but continues to function as before the seizure.

Another option is Coinbase, a bitcoin transaction platform, which recently announced a $5 million infusion of venture capital. While it’s still a nascent venture (not even a year old), the service hasn’t had any major hiccups yet and is relatively simple to use. You just enter your bank account and routing number, how many bitcoins you want and click “buy.” You can also send bitcoins to others through your Coinbase account. Just know you’ll be charged a 1 percent transaction fee.

Once you have your bitcoins, the fun part is spending them. Bitcoin. travel, BitcoinsInVegas.com, Spendbitcoins.com and Reddit have directories of businesses that accept bitcoins as payment. And Bitpremier.com lists high-priced luxury items (cars, jets, yachts, etc.) you can buy with bitcoins.