I used to have $90K in emergency fund.. Ever started reading here, I dropped it to $3000. Huge change!
But yes, you must educate yourself about investing and it takes a bit time. The easiest way is to split your money in a few lots, say 6 equally, and then buy the simplest Vanguard ETF such as VOO that mirrors S&P 500 once a month. Or if you wanna be safer, divide it up into 12 slots and use one year time to buy.. This will enable you to catch some bottoms if the market shall tank later since the risk is very high right now.
The reason why I favor Vanguard ETF vs Vanguard funds is because ETF automatically has the Admire share price, which is a lot lower. So it's cheaper to buy ETF. Secondly, if you ever sell some shares in mutual fund, you are subject to 90 day blockout so you can't get back in. ETF allows you to trade the day of, like a stock. Plus, all Vanguard ETFs are commission free.
You need to set up a money market fund with them first, and then attach a brokerage account with it. Happy trading.