What to start investing but don't know where to start? If you want to start investing you will have many options available to you. While setting up investment account for my clients we usually come to the conclusion that a mutual fund would be the best option. To sum it up a mutual fund is made up of stocks (shares) from companies all over the world. An investment team (Fund Managers) use their clients money and invest for them. It is the fund managers duty to build a mutual fund that will best meet their clients needs.