A balanced portfolio of investments allows investors to stay exposed to market performance and lowers an investor's risk if any asset loses value. People who are young tend to be able to afford more aggressive investment strategies with a higher risk tolerance, whereas older people should invest more heavily in lower risk fixed income opportunities. You can use this tool to enter your age, risk tolerance & other relevant factors to help determine what mix of stocks, bonds and cash you should have in your portfolio.
Please note: you invest at your own risk. Speak with a cerified financial advisor before making any investments! We also recommend reading Harry Browne's Fail-Safe Investing: Lifelong Financial Security in 30 Minutes and his permanent portfolio approach as a beginning guide to understanding portfolio construction.
While short-term market trends may be hard to predict, one of the few things you can control is the fees you pay for investing. Some of the so called "robo advisors" market themselves as being superior to other investment options, but a low-cost Vanguard fund will typically beat out other investments in terms of charging a low overhead management fee.