I attended Next.js Conf in 2021 and 2022 and I can definitely say it became my favourite online conference. The production and content quality is a pure gem. The greatest thing that it's freely available on YouTube to watch all of the talks with the pace which suits you.

Introducing Turbopack: the Turbo-charged bundler - Maia Teegarden

How a team of three built an extensible Web analytics SaaS in three weeks with Next.js - Raquel Yuste

Building a design system in Next.js with Tailwind - Tru Narla

Next.js is a backend framework - Theo Browne

How Next.js and Prisma make frontend developers full-stack - Amy Dutton