How to create NFTs for photos and sell them on crypto marketplaces like Opensea

Ultimate guide to NFTs For Photographers.
This video is well presented, organized and helpful .

Timestamps:
00:00 Intro to NFTs
00:40 What is an NFT
04:46 What is an NFT Marketplace
06:07 How to create Photo NFTs
09:05 Opensea NFT collections
10:02 How to create an NFT on Opensea
16:14 What are NFT Gas fees
18:54 How to sell your Photo NFTs
21:10 How to promote your Photo NFTs
21:35 What are smart Contracts