You're right! Only new posts come up! I followed some more general tags and started getting posts. Thanks!

Looks cool! But I'm confused about the hashtags. I followed a bunch but my home feed hasn't changed at all. What's the point of following hashtags?

C# was the first language I learned in school, there's plenty of beginner resources for it on Youtube. You can also try some projects using Windows Form Applications (janky but fun) or the Unity game engine, which has tons of resources online.