I would start with 100% VTSAX assuming that you are not planning on touching it for a long time. Expense ratio is 0.05%.
I am sure some others would jump in and make suggestions also.
Unless I need that money in the next couple of years for some valid purpose, I would google the "JL Collins Stock Series" and read it all the way thru, paying especial attention to the inevitability of major stock market declines.
Then, I would look into the mirror, straight into my eyes, and recite these words from the heart,
"I swear before all-mighty God that I will not panic and sell my stock like a dumbass when the stock market values plummet."
If I realize I actually MEAN what I just said, I would put all 10k in Vanguard's VTSAX fund.
And no, I'm not joking.
I remember reading that one investment company did a study to determine the demographic characteristics of its most successful investors.
It wasn't male or female, black or white, etc. It was dead people. 2nd most successful group was people who bought the stock and then forgot about it. The things both groups have in common are (a) they don't panic and sell when prices drop and (b) they hold the stock for a long time.
Enjoy your new investment!
Oh, if you can put it into a tax sheltered account, even better.