Choose Good Fund Mangers
Choose good fund managers. In such a volatile market, it is key to be diversified and choose Mutual Funds that are managed by the best managers.
Fidelity New Insights is a Large Cap U.S. fund that is very good. Ivy Asset Strategy is a World allocation Fund that is fantastic as well. If your just starting, start with those two funds and you will have U.S. and International companies in your portfolio.
Im a licensed financial planner, and am not affiliated with either of the investments that I just recommended.