Index funds, baby. Index funds all the way.
I grew up with a father who was very into investing and the power of dividends and compounding interest, so was exposed to it early. My sister has a MBA. We joke about our favorite index funds. It may be WhiteCoat who said it first (or best?)... if you can learn renal physiology, you can learn this. You just have to make yourself do it.
I do our own taxes every year because (gasp) I learned how, and like to know the nuts and bolts of the tax code. And we still itemize deductions because it's worth it to do so for us. The 1099-Bs are slightly annoying, but husband generally is the only one who ever sells. (He does his own thing with his money - we both got burned in first marriages, so it works for us.) I put my money in and unless something catastrophic happens, it stays there and just grows. The emergency fund is in a high-yield savings account at Discover bank.
Bogleheads is a great resource if you don't have my Dad, who essentially is just Bogleheads with Dad jokes. But I think you can probably get Dad jokes there if you look hard enough.
FWIW, my sister's favorite fund is VTSAX, but I use the VBIAX as a core fund as it's a 60/40 total stock/total bond, and both have very low fees.