This README lists links about the VideoLAN projects to help you find the information you are looking for.
https://www.videolan.org/ The official VideoLAN website. Recommended way to download VLC and find out more info.
https://forum.videolan.org/ The official VideoLAN forum. Goldmine of information in an old school phpbb forum. Search is not always easy, but try and limit it with sections (per platforms, etc).
https://wiki.videolan.org/Main_Page/ The official VideoLAN Wiki. Some parts are a bit outdated, some still relevant. Many useful links.
https://wiki.videolan.org/Code_of_Conduct/ The official VideoLAN Code of Conduct
https://www.videolan.org/developers/vlc/doc/doxygen/html/group__libvlc.html The official VideoLAN doxygen developer documentation. If you interact with LibVLC, even through a wrapper, this might be useful to you.
https://trac.videolan.org/vlc The official VideoLAN bug tracking website. It concerns mostly VLC desktop and libvlc core bugs (not mobile apps or bindings).
https://mailman.videolan.org/pipermail/vlc-devel/ The official developer mailing list
https://code.videolan.org/ The official VideoLAN GitLab repository where most development occurs, and some bug tracking as well.
https://jenkins.videolan.org/ The official VideoLAN Jenkins build server
https://github.com/videolan The official VideoLAN GitHub mirror organization.
http://nightlies.videolan.org/build/ Nightly builds for most platforms.
http://streams.videolan.org/ Streams and samples for testing
#videolan on irc.freenode.org The official VideoLAN IRC channel
https://twitter.com/videolan The official VideoLAN Twitter account
https://wiki.videolan.org/hotkeys_table/ VLC desktop hotkeys table
https://stackoverflow.com/a/9422315/4064749 Retrieve VLC logs from the GUI
https://wiki.videolan.org/Bounties/ VLC Bounties list
https://www.reddit.com/r/vlc Community subreddit around VLC projects
https://stackoverflow.com/questions/tagged/vlc+libvlc StackOverflow questions tagged [libvlc][vlc] on the popular Q&A site
https://stackoverflow.com/questions/tagged/libvlcsharp StackOverflow questions tagged [LibVLCSharp]