Well I think in your problem, you only need to know where is the proper site to buy bitcoin. Many of us has no trouble of buying some, so you can do too.
But there are many people thats like him who also didn't know where to buy online though.
Yes, all of them must know where to buy. Why? It is because before you do something you must know where to buy because you will lose money if you do a mistake. Take gambling for example, yes gambling is a game of chances, but if you are gambling to
sites which the game has fair play, and you know that you are a intuitive risky and lucky person, then you can gamble. But if you know to yourself that you are not that lucky, not an intuitive thinker, and the site you are playing don't have a fair gameplay, then you will obviously not gonna win. It is the same to buying bitcoin, don't buy if you aren't sure that the site you are buying is legit and if you are not a person with patience because holding needs a lot of patience.