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.