The most important source of support is the NetBSD community itself. The community section lists various resources on where to get help in case you encounter any problems.
There are also a number of consultants for hire in case you need commercial support.
In case you need to know if a certain piece of hardware is supported by NetBSD, check the list of supported hardware devices.
Found a Bug? Please let us know.
Before actually submitting a report, please search the PR database to check if the issue probably already has been reported.
Not found what your were looking for? NetBSD searches offers various methods to help you find what you are looking for.
NetBSD's security details and advisories can be found via the Security and NetBSD webpage.
pkgsrc.se is an easily navigated frontend to pkgsrc. It tracks changes and updates to pkgsrc and pkgsrc-wip. The site also provides a "package tracker" (for email notification about package-specific changes), statistics about pkgsrc, and RSS feeds. It is the "all about pkgsrc" service!