Good for you that you have come into some money, and you are wise to plan carefully with what to do.
some have said to pay off debt and I would agree to pay off high interest debt (anything over 10% for sure.
I would then suggest that you keep an emergency fund - like in your money market acct that can be accessed easily. 6 months of funds is a good rule.
As for investments- have you considered Real Estate? Maybe use some as a down payment to avoid mortgage insurance. You can invest in real estate through some ETFs and REITS. You are young so you can weather the ups and downs of the stock market. The market has been tough this year but it also means that there are some values out there to buy low and then sell high later on.
I’ve always liked Warren Buffetts advice. Invest in companies that you know and trust. And do your best to avoid the temptation of buying into something that you don’t understand. Stick to equities, mutual funds, bonds, money market, and ETFs at this time. Index funds are a good way to start and you can grow your portfolio by enrolling in an auto dividend reinvestment plan and using recurring mutual fund purchase plans. Finally, research tax liability of your investments as there are considerations to be had. If necessary get a tax advisor.
Best wishes!