so, what id like to do is invest bitcoins to a stock or mutual fund account, but am not sure the best way to go about it. any tips/advice?
I don't think there are any bitcoin mutual funds, yet.
Buy and hold strategy with respect to Bitcoin is more popular, than investing it.
Also why would anyone want to invest in something that is going to give you less returns on average than bitcoin itself, you are going to lose money that way, it is better to just hold bitcoin for as long as you can before you sell that way you can make decent earnings in a relatively short amount of time.
investing bitcoin now is a good thing to do by the investors then hold in a long terms.
With this strategy many of them became rich now. Like example the investors who bought bitcoin when it was 200$ now bitcoin 2000$ almost each of bitcoin.