For the deepest dive, consult the official Help > Reference Manual within the software (which is updated bi-weekly). But for the fastest workflow from brain to speakers, bookmark this guide.
A standard outlines a specific workflow designed to maximize creativity while minimizing the tedium of note-entry. synfire manual
Keep the manual’s PDF open with a good search tool (like Adobe Acrobat’s advanced search or a dedicated document indexer). The manual’s own table of contents is too abstract for quick lookup. For the deepest dive, consult the official Help