Bitcoin is now a new popular method of payment, individuals send money to there relatives and friends and family members through bitcoin and you can also receive money through the payment of Bitcoin wallet,so it is becoming so popular that is no longer hiding 

I think that not everyone already knows about bitcoin because some of my friends didn't know about it. There are people who know about Bitcoin but there are few who doesn't know about it. Some of my friends knows about it but they didn't believe on it because they always say that bitcoin is a scam or a dangerous site, I don't know why they think that Bitcoin is a scam but there are more people who believe on it because they all know the process and they all know how it works and how we earn to it.

Btc is still in its early stages. For world popularity i mean. Lots of people do not know what btc or cryptocurrency is. People into investing and knows the internet are usually into btc. People that are not into internet invest in real estate. That is just my opinion.

No not everyone know about bitcoing. Like not all in my country..when i speak about to some of the people i know they dont have idea about bitcoin. Sometimes i cant even explain it to them further because they are totally have no idea about it even the name itself.. but some computer savy friends have info aboir bitcoin but they hardly even talk about though.

i think depending on the country we are at different levels of adoption, globally, i think we are at ealry adoption stage still. majority of world population have not yet adopted cryptos. however, in some developed countries, the level of adoption is abit highier

Almost a year after your posting time, much have happened OP. Here in our country we have millions of what we call here "keyboard warriors" because almost everyone here are into social medias especially facebook. I've seen how powerful this platform is and right now btc is all over it. Although many have heard about it already, all they know about it is its name and not its function. Many are interested but don't know how to start so they just ignore it.

They may not know about it. Many of my family and I do not know.
Internet followers may have heard about it. This is an absolute rare but new registration is underway.

I also once asked the people around me, they also answered did not know about bitcoin. in my opinion they are very loss do not join bitcoin. there are some who want to know about bitcoin, I taught him about bitcoin, then he is very happy because he has earned from bitcoin.

There's a reason why they don't know about those stuffs -- They are not interested about it. For them bitcoin is a mere form of investment and so that's how they treat it. They don't care what's going on under the hood. They don't care about the nodes and all that and that shouldn't concern you at all. It doesn't even concern them. What I realized is that as time goes by and the more bitcoin becomes like a usual currency, the more the technical part of bitcoin will be neglected. Supply and demand is just common knowledge, so people would know how bitcoin's price is determined.

We don't have to teach them at all. Just imagine a teacher trying to teach Math class to an English major student. The reason why he/she took English as a major is because that's what they are interested on. It's not that he's totally not into Math, it's just that he's not interested. This is analogous to people only wanting to learn about the investment and money making aspect of bitcoin and not the technicalities.