This video shows what you need to know to pass CSWP assembly segment exam, and some tips for faster modelling
You can find another video of CSWP segment 3 here: https://www.youtube.com/watch?v=ZW2gu2LWp5k&feature=youtu.be
You can find PDF document and existing parts here:
https://grabcad.com/questions/cswp-segment-3-assemblies-preparation