There are several types of investments and many factors that determine where to invest your funds. It obviously begins to investigate the different types of investment you have, determine your risk tolerance, and determine your investment style along with your financial goals.
Before you made a final decision and purchase, you would do some research if you were to buy a new car. You would never have planned to buy a car you hadn't taken for a test trial. Investment works the same way. You will learn about the investment as much as you can, of course, and you want to see how past investors also did. It's common sense! It's common sense! It takes a lot of time to learn about stock and investment. But time was well spent.
Many books and websites are on the subject, and even college courses on the subject-what stock brokers are doing can be held. You can actually play on the stock market with Internet access, using fake money, to get an impression of how it works. You can pretend you're investing and see how you're doing that. Use any search engine to search for "Stock Market Games" or "Stock Market Simulation." This is a great way to learn how to invest in the stock market.
There are no simulators available for other types of investment outside the stock market. You need to find out the hard way about this type of investment by reading. You should read everything you can do to invest as a potential investor... But start with the books and websites for the initial investment. If not, you will soon find yourself lost.
Finally, talk with a financial planner. Specify your goals to them and ask them for their suggestions–they do so! A good financial planner can easily help you decide where to invest your funds and help you plan to achieve all your financial goals. Many even teach you how to invest–make sure you take care of what you're saying!