Idk I'm resharing what my friends share with me. No idea. I'm sure there are apps out there that make these easier.
Discussion
On iOS with damus you can highlight snippets on safari, optionally add a comment, and publish to nostr.
Here is the highlights support matrix: https://github.com/nostrability/nostrability/issues/61 
nostr:npub1wmr34t36fy03m8hvgl96zl3znndyzyaqhwmwdtshwmtkg03fetaqhjg240 nostr:npub1j60x528w2g2vkq5kae5uhh8y7sezjyj20zcsg0v9muc72cmdpu0s0md7ua I know yall like news. Highlights in safari + quotes enables Nos users to bring to nostr.
Aite