Always consult the Owners Manuals first.
Note: the wiki is currently being updated with information about the FM3.
Axe-Change is Fractal Audio's community website where users share presets, IRs and effect blocks. Upload your own creations or download those made available by others.
Visit Axe-Change or access it from within the software editors.
Fractal Audio's user forum is another source for shared presets, cabs and effect blocks.