I reccomend buy btc 1 btc when btc is down and when up btc you sell and you winning and buy more
I think that is not the right answer for his question because he's asking how to earn 1 bitcoin a year and not how to get it within a year. If you ask me it would better if he don't put his money on just buying bitcoin, It's better if just use at least $100 of this money to use it as a capital on doing some altcoin trading because it's one of the best way to grow your money fast like doubling it in just a week or even days if you are lucky on what altcoin did you choose.
it is not wrong it is just bad, and incomplete. buying bitcoin is so much faster than earning it if you are brand new to bitcoin. so buying it would be super fast.
also he is talking about trading bitcoin which is a pretty good way of making profit with bitcoin but the thing that he didn't mention is that to do so you need some expertise which again a newbie doesn't have.