Looking for some sources for my older uncle

Hi all! So I took about 5 hours over Christmas to explain bitcoin and cryptocurrency in general to my older uncle (mid 70s). I tried to put everything into terms he’d be able to understand (he’s not stupid, just used to very traditional finance) and he ended up investing. With ETH 2.0 Launch and all the hubub around crypto, he’s started coming to me with questions about ETH.

I’d really like to point him to some sources that can explain how ETH evolves traditional finance (dapps, interest “accounts” etc) using comparisons he can understand (ie I explained btc as a ledger to help him understand it) and laying out what the future could look like.

I know it’s a long shot and a bit niche, but can anyone point me to some good sources?

Thanks all!