- .NET website (https://dot.net) - High level info on different workloads, 5 minute in-browser tutorials, links to live shows and community
- MS Learn (https://aka.ms/mslearn-dotnet) - Interactive tutorials with learning paths built from 30ish minute learning tutorials
- Docs (https://aka.ms/msdocs-dotnet) - More in-depth documentation on specific tasks and features, e.g. API documentation, performance optimization, security guidance, etc.
While you can go directly to any of them, the dot.net site will link you to Learn modules that will link you to docs, so hopefully you can start on the dot.net site and it will help you find the right place.
One thing I really like (and I'm totally biased because I've helped set it up) is https://live.dot.net. Those are all our live shows with the PM and dev teams. We've got a show every day of the week, and there's always really good Q&A in the chat.