Sub0 is a yearly Polkadot developer conference, typically held once a year in Lisbon.
Sub0 brings together the best technical minds from the ecosystem, often attended by Gavin Wood and other Polkadot core contributors. This is the place to understand, learn and work with the latest bleeding edge blockchain tech.
https://www.polkadot.network/ecosystem/events/sub0/
<iframe width="560" height="315" src="https://www.youtube.com/embed/2MnrABFLxik?si=GOQ_w4M-jiqqN-U4" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" allowfullscreen></iframe>The talks for 2022 are accessible on the above link, the 2023 is happening very soon!