I don’t seem to understand what kind of risk you mean as to being the first thing to do in bitcoin investment. If a person is  able to figure out a discretionary income to accumulate and invest in bitcoin which  I think that should be the first and most important step in bitcoin investment journey. I don’t personally see too much of a risk if an investor is investing with his discretionary income after sorting out his other financial obligations. Maybe the risk you’re talking about is to start up your investment with money meant to be used to sort out your other financial obligations and needs, if that’s the case then you’ll be taking a huge risk that is capable of denting your investments and lead you to a financial crisis in the future because you’ll tend to selling off your bitcoin holdings when its not yet due just so you can sort out your financial needs, and also when In an emergency situation which requires cash to solve. I especially advised newbies who are desirous to investing in bitcoin that the first thing they need to do is to be able to figure out a discretionary income to accumulate and invest with.