# Key Concepts

## Key concepts

If you aren't used to NFT concepts, check out these guides:

[What is an NFT?](https://docs.luxy.io/help-center/luxy-marketplace/key-concepts/what-is-a-nft)

[Collections](https://docs.luxy.io/help-center/luxy-marketplace/key-concepts/collections)

[Royalties](https://docs.luxy.io/help-center/luxy-marketplace/key-concepts/royalties)

[Gas price](https://docs.luxy.io/help-center/luxy-marketplace/key-concepts/gas-and-fees)