Kate's take, in a sentence or two

Kate explains that Claude skills are like Claude's version of custom GPTs, better in most ways except that they're less shareable in a way that protects your IP. She creates them by uploading her own frameworks, transcripts, workbooks, and notes as knowledge files, then uses custom instructions to tell the tool how to use that material—and she points to her Back Office Bot Squad course for a detailed walkthrough. She also notes that when she trains a GPT on someone else's book rather than her own IP, she only uses it for personal purposes (like health or mindset) since reselling something trained on another person's content wouldn't be ethical.