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
CTRL + Tab toggles between the different open windows in LMMS. All the windows also have their own shortcuts, the keys F5 to F11.