Places where you can go and learn stuff.

Learning How To Learn

Roadmap.sh
https://roadmap.sh/

System Design

ByteByteGo
https://blog.bytebytego.com/

Microsoft Architecture Center
https://learn.microsoft.com/en-us/azure/architecture/

AWS Architecture Center
https://aws.amazon.com/architecture/

Google Cloud Architecture Center
https://cloud.google.com/architecture

Engineering Blogs

Cloudflare Blog
https://blog.cloudflare.com/

Discord Engineering
https://discord.com/category/engineering