> For the complete documentation index, see [llms.txt](https://whitepaper.sharefull.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://whitepaper.sharefull.io/fundamentals.md).

# Fundamentals

- [Customers](https://whitepaper.sharefull.io/fundamentals/customers.md)
- [Shop Owners](https://whitepaper.sharefull.io/fundamentals/customers/shop-owners.md)
- [NFT Item Holder](https://whitepaper.sharefull.io/fundamentals/customers/nft-item-holder.md)
- [Registered Customers](https://whitepaper.sharefull.io/fundamentals/customers/registered-customers.md)
- [Free Viewers](https://whitepaper.sharefull.io/fundamentals/customers/free-viewers.md)
- [Marketplace](https://whitepaper.sharefull.io/fundamentals/marketplace.md)