>>1011892
idk what their exact process is but I'd imagine it's pretty much that. in some cases I doubt they sculpt at all and use subd modeling instead for those nice rounded and smooth shapes they're known for, but they'd still be unwrapping it and texturing. plus use the bevel modifier for props, they never seem to use very sharp edges

would recommend going straight to the source and looking at their models, that way you can look at them in blender and try to reverse engineer it, look at how they might've made it, plus you can see their textures:
https://www.models-resource.com/nintendo_switch/

as for courses, this is probably what you're looking for:
https://keelanjon.gumroad.com/l/beginners-guide-to-blender-by-keelanjon?layout=profile
polygon runway's stuff would be good too