do you have any debts? If so, pay them off.

If not, congrats, you're on your way to building wealth! Check out the wiki for guides. There's also a massive flow chart to follow on the wiki: "Prime Directive: How to Handle $"

Do you have an emergency fund established already? If not, this is the time to start. If so, you can contribute to it to cover 6 months of expenses. This is also on that flowchart.

I would say you should look into getting a home in the future. You can start saving for a down-payment now.