You can do it yourself by opening an account directly to one of the fund companies. Fidelity is a good one, I agree. Unless you have a lot of money. In this case you can probably hire a financial advisor to see how your money should be allocated. But, if you want to only buy mutual funds shares, you can do it yourself. For example, you can open a Fidelity account, they have great customer support and will advise you some fund that suits you well, and you can even buy other companies' funds through the Fidelity account.
