Assuming that you're asking how to invest them, and not spend them (as you could buy anything that you need) follow the steps below:
Step 1) Don't ask random people on the internet for such advice (like this thread).
Step 2) Only use the amount that you are willing to lose.
Step 3) Start with what interests you the most.
Many posts to discuss this. I guess most people will just hold. Afterall, at the current price, 10BTC is not a big amount.
It's a big amount for a lot of people, and most of the users here don't have access to that much money.
If i had 10 BTC definitely will play on gambling site to lose everything within few hours because it is best way to spend bitcoins there.
-snip-
Corrected.