Go to Web Apps Stack Exchange unless you require heavy integration with a desktop installation.
YouTube is a video sharing service owned by Google.
Questions about YouTube are only on topic if the use of desktop software is a prominent factor. Such examples include:
- Blocking YouTube ads on Google Chrome
- Extracting audio from a YouTube clip
- Embedding a clip into OneNote
If your question is about how to better use, view or configure something through the YouTube website or player, it belongs on Web Applications.