Video to get you started.
Helpful Rhino Tools
Offsetting a surface / ExtrudeCrv
Rotate
Measurements
Moving objects precisely
Grouping vs joining
MakeHole / UntrimHoles
Smash / dupFaceBorder
Finger and slot box tools
Making a pressfit enclosure in Rhino
Makercase (not pressfit)
More automatic box generators - boxes.py
Fusion Drawing Resources
Getting started with Fusion
Drawing a press-fit box in Fusion
Onshape Resources
Press fit laser cut box with Onshape
Working with stand offs
What are they? + Example use