Is there a library of parts I can add to my sketches?

Hi guys, I'm new to FreeCAD and CAD in general - My only other experience with 3D modelling is a couple months of blender use.

Just wondering if there is a part library of mechanisms. For instance if I want to add a planetary gear set or a scotch yoke to attach to my parts is there a way to download that and add my own constraints/measurements to it?

Thank you.