Write a beginner's guide to Cardano wallets

Write a clear, beginner-friendly guide explaining what a Cardano wallet is, the difference between custodial and non-custodial wallets, and how to set one up. The guide must be at least 300 words, well structured with headings, and written so someone with zero crypto experience can understand it. Submit the guide as a URL (Google Doc, Notion, GitHub Gist, or any public link).