probably everything Andreas Antonopoulos has is worth watching and is only thing worth watching on Youtube. https://antonopoulos.com/

apart from that it depends on what level of knowledge you want to gain. for example if you want basics can simplified topics then Coindesk.com has good articles in their education section that are worth reading and are simple enough to understand.
but if you want more technical knowledge then you need to be more specific about what part of "blockchain technology" you want to learn when you say "learn more about crypto". it is so vast and some parts are pretty complicated like the elliptica curve cryptography. however you can find most stuff on bitcoin wiki https://en.bitcoin.it too.