Investing in trading is what everyone is recommending and that's a real way of earning 1 bitcoin for one or two months. But before investing you need to think about first if you are decided that you want to trade. And having more source of income is better like working for a company or being a freelancer will make it more possible.
It will never be easy to earn 1 btc in a quick time and to earn that amount you need to undergo a great level of market research and depending on that you need to choose the right coin to make an investment and when it comes to make a good profits from altcoin trading the timing of investing will play an key role as you should invest your money at a right time when the price is really low.
And that's what he needs to understand. It's a little by little process and there's no way that we can earn big amount that quick. Because when I was still new to bitcoin I started with small amount and when I'm on my way, I keep on learning everything about it but still I didn't managed to earn that big for only a short period of time.
Earning 1 full btc is not a joke as I am sure that majority of people who are part of this forum would not be holding 1 full btc in their wallet even after spending enough time behind earning them in different methods and to earn 1 btc from trading you also should have good capital to invest as you can never make that big amount with a small investment.