Welcome to the LMMS Wiki! Here you'll find the documentation, tutorials, guides, resources, and much more.
Manual [wiki] [pdf] (for v0.4.12)
How to Report Bugs
Developers (Wiki on GitHub)
Creating a Theme
Theme Porting Guide
If you don't have enough effects in the "FX" tab of an instrument, try searching for and installing more LADSPA effects using your distribution's standard package management tool.