CAD Libraries
AutoDesk Fusion360 Gallery
SketchUp Gallery
SolidWorks Gallery
GrabCAD by Stratasys
Thingiverse by MakerBot
Youmagine
TurboSquid (Awesome stuff, but NOT Free)

Fusion360 Resources
12 Fusion360 Intro Tutorials - 45 min
Fusion360 YouTube Channel
Select Fusion360 Focused Courses from AutoDesk University
Detailed Fusion360 Tool Videos from AutoDesk Design Academy

Online Printing Services
Fictiv
i.Materialise
Quickparts
Shapeways (They offer a 10% educational discount)
3D Hubs
ProtoLabs

Local Printers
ProtoCafe
Studio Fathom

Printing @ Stanford
Stanford Product Realization Lab's Room 36 Requires Shop License and Training.
Garner Lab in Comparative Medicine Connect through iLab to request printing services.
The Lathrop Library create:space Open to all Stanford Students.