Onshape Account Setup: https://www.youtube.com/watch?v=27fB43KIlaM

Sketching:

https://www.youtube.com/watch?v=rsvkQSI27V4 (Basic)

https://www.youtube.com/watch?v=R0TslGC_soE (Advanced)

Construction Lines: https://www.youtube.com/watch?v=FVcqPtUdpIo

Dimensions & Constraints: https://www.youtube.com/watch?v=OB5WRWTChug&list=PL2935W76vRNEE_NNWlpUar20iUdkFQ1z2&index=2

Extruding to Specified Depth:

https://www.youtube.com/watch?v=7mxpGEh3CmM (Basic)

https://www.youtube.com/watch?v=hPRvEU_TqI0 (Advanced)

Assemblies (Generative):

https://www.youtube.com/watch?v=9FldXk8r8BQ (Basic)

https://www.youtube.com/watch?v=db5OFEoddRg (Advanced)

https://www.youtube.com/watch?v=L6HO0DswUkU&list=PL2935W76vRNEE_NNWlpUar20iUdkFQ1z2&index=12

https://www.youtube.com/watch?v=X36CUx4sfAw&list=PL2935W76vRNEE_NNWlpUar20iUdkFQ1z2&index=13

Subassemblies: https://www.youtube.com/watch?v=R4PDBd8H5h8

Extruding to Face/Point: https://www.youtube.com/watch?v=DKKuJWrUe3c

In-Context Part Studios: https://www.youtube.com/watch?v=Frg6rr1xook

Editing Part Studios In Context: https://www.youtube.com/watch?v=zkmwUCAGbDQ

Properties:

https://www.youtube.com/watch?v=sLMGM9s25Ww

https://www.youtube.com/watch?v=VN3PnmROAvY

https://www.youtube.com/watch?v=PFA2ixmjJfo

Arcs/Splines:

https://www.youtube.com/watch?v=XExFx9RNlS4

https://www.youtube.com/watch?v=OBjbTuRdCm4

https://www.youtube.com/watch?v=GJ2HJk6YIBA

Fillets & Chamfer: https://www.youtube.com/watch?v=bO-fUgp2fiw

Vent Script:

https://www.youtube.com/watch?v=yRPHoEnzHmY

https://www.youtube.com/watch?v=piQvWkTZAHQ

Variable Part Studios: https://www.youtube.com/watch?v=K-PaJB7EKuI

Joints:

Elbow Joint: https://www.youtube.com/watch?v=elbGuDPo2Cs

U Joint: https://www.youtube.com/watch?v=ap-EM7HftTs

Mate Connectors: https://www.youtube.com/watch?v=9JQ74brBES0

Boolean Tool:

https://www.youtube.com/watch?v=oh7HmdaDG9w

https://www.youtube.com/watch?v=C_FiDr0V0cY&list=PL2935W76vRNEE_NNWlpUar20iUdkFQ1z2&index=11

Offest Planes:

https://www.youtube.com/watch?v=lGPlAXM3jOw

https://www.youtube.com/watch?v=f4FurEGQxDg&list=PL2935W76vRNEE_NNWlpUar20iUdkFQ1z2&index=6

Importing Parts:

https://www.youtube.com/watch?v=EOswTkSXY1E

https://www.youtube.com/watch?v=EfCep4UIJAw

Derived Sketch Faces/Parts:

https://www.youtube.com/watch?v=yWqlvvY3H1k

https://www.youtube.com/watch?v=50xdkbKgdUM

Spline Objects/Revolve: https://www.youtube.com/watch?v=3WskRJ_tNYo&list=PL2935W76vRNEE_NNWlpUar20iUdkFQ1z2&index=3