The Remix Stacks template, the K-pop Stack, is a pre-built template that combines Remix, Supabase, Tailwind, and more to help users create a note creation app with authentication. This template can be deployed using Netlify without requiring any credit card information. To deploy the app, users need to add three environment variables to their Netlify project: SUPABASE_URL, SUPABASE_ANON_KEY, and SESSION_SECRET. With these variables set, the app is ready for deployment, which can be triggered by clicking the "Deploy to Netlify" button or running a command in the terminal. Users can work on the project locally using the Netlify CLI, installing dependencies, linking their Netlify project, and starting development with `npm run dev`. The K-pop Stack template provides a note creation app that users can customize for their own needs, such as creating a fan page to post notes about favorite songs and outfits.