See the documentation manuals in doc/ with daily builds available online at
http://rtems.org/onlinedocs/doc-current/share/rtems/html/ and released builds
at http://www.rtems.org/onlinedocs/releases/

See the RTEMS Wiki at http://wiki.rtems.org/wiki/index.php/Main_Page
for community knowledge and tutorials.

RTEMS Doxygen available at http://www.rtems.org/onlinedocs/doxygen/cpukit/html

Get help on the mailing lists:
* For general-purpose questions related to using RTEMS, use the
  rtems-users ml: http://www.rtems.org/mailman/listinfo/rtems-users
* For questions and discussion related to development of RTEMS, use the
  rtems-devel ml: http://www.rtems.org/mailman/listinfo/rtems-devel