Want to invest in either mutual funds or income funds, but you don't want to pay a ton in commissions? Fidelity Investments is a great place to start. Clients of Fidelity can choose from roughly 3,600 transaction-free mutual funds, and any fund not on that list carries a $75 commission fee. That list of transaction-free funds is among the largest on the mutual/income fund investment market, but it is somewhat offset by potential minimum balance requirements. That said, Fidelity Investments is also well known for its in-house research and low overall fees. Beginning investors get access to all the tools they need by choosing Fidelity Investments.