Another possible way to make investment in bitcoin and for you not to worry is to try to split your 5k dollar USD and invest it to bitcoin in different times, such as weekly, or even per month, just to make sure that you are diversifying your investment to hit high market price, medium, and low. Which turns out to be fair for you and you being in the median. Because allot of newbies are investing in just one time, and when their money didn't grow, they became frustrated. So to avoid this, diversification of investment is needed.