There are allot of manner to earn allot of money with coins and that is really easy you can invest in coins and not spent any of them wait till he rises or you can invest into companys to get nice %.
Yes true there's alot of ways to earn money but the one I like the most aswell Is to just invest parts of your income into bitcoin itself and do absolutely nothing with it.
Just wait and hold it out for as long as possible and you'll get tons of profit for sure.
Well, if you can afford to buy bitcoins using fiat on regular basis then it can be the best investment for you in future which can give you huge profits if you manage to hold it for really long term.