Is this a good idea?

ok so im 14 and am going to live with my dad. all the child support that my mom pays will go into my bank account. i was thinking of takin half of it (150 a month) and investing it. i will invest it in a company called edward jones so that they will invest it for me. is this a good idea? what kind of increase can i expect? will i get money in return or will i have to sell my stock to get money? and do you have any suggestions on companys to invest in? i was thinking of maybe instead of edward jones doing it for me, i would invest in apple and microsoft.