Choose a rabbit hole.

Start with the thing you need to fix, understand, or finally stop searching for.

40 pieces C#

The language itself. Pattern matching, nullable reference types, records, and the features people skip because the old way still compiles.

 17 pieces ASP.NET Core

Minimal APIs, middleware, dependency injection, configuration, and the parts of the request pipeline that only bite you in production.

 11 pieces Data and EF Core

EF Core, SQL Server, migrations, and the long slow realization that the database was never the slow part.

 6 pieces Copilot / AI

Getting real work out of AI tooling, and being honest about the parts where it still hands you confident nonsense.

 3 pieces Windows

Building for the desktop people actually use. WinUI, packaging, PowerShell, and the platform quirks nobody documents.

 23 pieces VS Code

Extensions, workflows, remote development, and the editor tricks that turn a fresh install into a place worth spending the day.

 18 pieces Dev life

Everything that is not code. Reviews, postmortems, burnout, teaching, and learning out loud where people can watch you get it wrong.