dont invest if you dont have money 
Borrow money and invest in your future. For more then two years here do you know how many similar threads I saw? People complain on something that happens every day in banks world, how many people worked the whole life and stayed without pension? Crypto is not fair or gentle, you need to push your way trough. You need to know how to protect yourself, same like in the real world. If you don't know how to do that you are in trouble. Trust yourself and check more then once and you will be fine here, you can even make profit.
I think if he borrows money then he needs to think how he should pay that money in everyday or monthly. it is not a problem if he has a real job and he gets paid because he gives the money from his payment so he doesn't have to worry about anything. but if he doesn't have any job in real life then borrow money is not a good idea because he couldn't pay the money.
Fine. Though he earns from other job, it's not recommend to invest a large amount in a field where he is new. Let him try with a small amount. Choose the right crypto currencies. Study the market, analise and choose the right currencies.
If you feel that you are not yet prepared for such investment and revenue, kindly don't move ahead. Don't waste your money.