Email cinelerra@lists.cinelerra-cv.org for bugs or help 
Check the manual https://cinelerra-cv.org/docs/cinelerra_cv_manual_en.html 
Testers are welcome to report and supply examples; join at cinelerra-cv.org
If logged in as root, can capture crashes and email /tmp/cin*.dmp file 
Volunteer to help with language translations which will help you
Helpful videos: http://beccatoria.dreamwidth.org/144288.html#cutid2
Also see: http://g-raffa.eu/Cinelerra/HOWTO/basics.html