If you are in a country that has the store that accepts bitcoin then you can do it, maybe you need to do research first about the stores in your area that is accepting bitcoin as payment. You can also visit this one if you want,
https://bitcointalk.org/index.php?board=51.0my account is COINFLOOR, my wallet is ELECTRUM
You should not store your bitcoin in the Coinfloor because there is no assurance that your money is safe in exchange, as exchanges are always having a problem in terms of hacking, you should store it all to your electrum.