In some countries bitcoin cannot be use to buy Real stuffs like food clothes and other goods and services but even though bitcoin can be used in plenty of ways mostly in the cyberworld it is used in online markets like Game Credits, Gadgets some use it in the dark webs to purchase weeds,drugs. Others are trading it to a different crypto-currency or exchanging to dollars, so how to you use it ? 
Well, in my country i can exchange bitcoin into real money ^_^ i am so glad that my country has a bank can converts bitcoin into real money and i spend it on foods and a lot of them and but stuff of my parents and my brothers but i wanted to buy foods in the 711 i heard you can spend your bitcoin their but i am too afraid because it may have a tax or something and i don't know what is the transaction and maybe in the 711 the cashier thinks of me like a fool that i use internet money to buy real stuff >.<