The 5 most important lessons:

1. Understand basic and advanced techniques for creating highly realistic clothing in Marvelous Designer.
2. Clean up meshes from Marvelous Designer to Zbrush and retopologize in Topogun.
3. Efficiently UV meshes and bake out clean texture maps .
4. How to utilize Quixel's dDo to create stunning texture maps for characters and clothing.
5. Use Marmoset Toolbag for professional renders of game ready models.

More info - https://www.uartsy.com/course/clothing-design-for-games