u/Flamingolvr

I opened a Schwab account before 4/15 and maxed it out. I’m a newbie and didn’t know I also had to invest it. I’m 32 years old. I saw how to do it on the website. But where should I invest it? How do I know what gets the best return? Is there an option for them to manage it for me? Or is that a bad idea? Do you put it all into one stock? Break it down for me and be gentle please, thanks in advance!