A. There are dozens of online robo-advisors offer low cost investment options. It works like this - you answer questions about your attitude toward risk, then you will be given a portfolio that fits your risk tolerance level.
While this is very sound, there is one thing that is against such risk-based investment approach - it ignores your investment goals.
For example, if you have a conflict between your investment goal and risk tolerance, the robo-advisor will advise a portfolio that is suitable to your risk tolerance level, however, that might never have a chance to reach your investment goal! It's important to keep this conflict in mind when using robo-advisor. For someone who is new to the investment world, it will pay off to gain some basic knowledge about investment instead of relying entirely on a robo-advisor.