25 y.o recently moved to the U.S, need some guidance with investing

I apologize if this is not the right sub

As the title says, about two years ago I moved to the states, I now have a good job where I make ~12k a month, I have been able to put some good money aside that I’ve sent back to my family back home and paid off some college debts and paid my sisters tuition as well, now I need to start investing, but I want something that will passively increase with time, I’m thinking somewhere I can leave it for my kids to be able to benefit from it or at least retirement money, I am not trying to get rich quick, need some guidance please