The best thing to use is that before should accumulate Bitcoin he or she must have some cash that will serve as emergency funds while they accumulate , like instance being paid $100 and $50 can serve as emergency funds. He or she can use $30 as his weekly purchase fir Bitcoin accumulation, while he hold the remaining amount as reserve funds.
I think that you understand that it is not necessary to establish an emergency fund prior to getting started with bitcoin... but yeah, the more disorganized a person and the worse situation of his finances, then he might need to be careful regarding how much he puts into bitcoin without making sure that his finances are not in order so that he does not have to sell any bitcoin at a time that is not completely of his own choosing, so any guy with bad finances might have to balance how much he is putting into bitcoin, yet there may well not be any reason NOT to get started, even with $10 invested in bitcoin, but yeah, if a guy has absolutely no disposable income, then he is not in a position to invest into bitcoin, so there is a need to have disposable income prior to investing, and sometimes there could be some struggles in terms of figuring out the extent to which a guy has disposable income and then at the same time, if there is building of an emergency fund, reserves and./or float at the same time that there is investing in bitcoin, the bitcoin investment may well have to stay pretty small while these basis financial matters are getting put into some kind of an order that actually establishes that disposable income is being used rather than money that is going to be needed for short or medium term expenses.