The only thing I know about Bitcoin is that it is a virtual 'money' but what are the other use of it? What are your advantages for having a bitcoin?

There are many advantages that we can get from having bitcoin. First we can make oney out ouf bitcoining. Just using you gadgets like cellphones or laptops or PCs, we can now earn money. Another is that we can pay bills or we can make transactions easier because of bitcoin. Especially for those who do not want to go on a traffic jam just to pay their bills. It really is very helpful and convenient in many ways we can even start business if we have enough savings from doing bitcoin.
Yes, bitcoining really is helpful for it produces virtual money that we can also earn. Finding how to use bitcoin is quite easy and convenient because we use gadgets which are necessary nowadays and are easy to find. Bitcoining is really easy to use in transactions because we only need internet, if someone doesn't want to waste money in travelling just to pay bills, they could rather use bitcoin. Someone who is unemployed can start a business through bitcoining.
... in a shit economy. unless you are starting a picking up rocks off the ground business, most startups require capital, even if you are just cutting grass. unemployed means broke or running to broke. not the best time to start a business, IMO.
everyone doesnt have a cellphone, or access to the internet. the advantages that are typically enumerated for bitcoin break down immediately for those that dont have access to 3rd through 1st world amenities.. and the amenities like this are fickle things that arent really required for survival. you dont need internet to survive, nor a cellphone. but you need these things to bitcoin, at the most basic level.