I will suggest that with some of his bitcoin he has to do trade so not to spend a fraction of it and with some of it start an online business like a website of any category so he can then earn by showing ads at there.
I think it depends on your capital if you have capital you can immediately try to use something such as trade or investment capital, usually it will provide convenience for you but if you do not have any capital it would be better if you use such a method to create a website and earn by ads