To learn about Flutter’s different web renderers (HTML and CanvasKit), see 
Web renderers

To learn how to create a responsive Flutter
app, see Creating responsive apps.

To view commonly asked questions and answers, see the
web FAQ.

To see code examples,
check out the web samples for Flutter.

To see a Flutter web app demo, check out the Flutter Gallery.

To learn about deploying a web app, see
Preparing an app for web release.

File an issue on the main Flutter repo.

You can chat and ask web-related questions on the
#help channel on Discord.