Investing For Beginners/Teens

I learned from two YouTube videos "Investing For Beginners" and "Investing For Teenagers" (https://www.youtube.com/watch?v=gG60m9HuUYQ) (https://www.youtube.com/watch?v=cxlOzNa_lzk). While watching "Investing For Teenagers", I have learned that you want to manage your money because you need to have a certain amount of money for banks and companies to take you seriously when investing. Because we are under the age of 18, we need to have a joint account, or an account in the name of two individuals who equally share its liabilities and rights, according to BusinessDictionary. The video suggests to use Vanguard, an investment management company, because it has the lowest fees and it is not owned by a shareholder. In order to use Vanguard, you need at least $1000. A fund is a collection of stocks that you actually invest in. It is suggested that you do not invest with all your money in case the company goes bankrupt and you lose the money you invested with. In "Investing For Beginners," I have learned how much money you should invest with and the definitions between stock, a mutual fund, and an index fund. According to experts(not specified), it is suggested that you invest with 10-30% of your income. A stock is like owning a part of a single company, where as a mutual fund is having a person picking hundreds of companies for for you to invest in. In a mutual fund, the person who helps you decide the companies, may charge you a heavy fee. An index fund is when you invest in multiple companies at once, where there is no human interventions. I learned that investing may be risky, and there is a possibility that you many lose your money.