nostr:npub1rxysxnjkhrmqd3ey73dp9n5y5yvyzcs64acc9g0k2epcpwwyya4spvhnp8 is what I learned on. It’s almost an hour, and I know you’re a proponent of shorter videos, and in general I am as well, but this is such an important tool and part of learning to use Bitcoin that it’s worth watching the whole thing.