The Bogleheads have started a new podcast (and Twitter space where you can listen live and maybe ask a question). I listened to the first episode and sounds like it's going to be a good resource.
A couple of interesting points they mentioned in the first episode:
International stocks are really required now (not just US) if you want industry diversification because of the focus on tech stocks in the US.
Index funds are probably nowhere near having an effect on determining market prices themselves.
They also talked a bit about bonds, but I think the focus was a bit specific to US taxes to be useful for international listerners.
https://jonluskin.com/bogleheads-live-e ... ogleheads/