Go to nonfungible.com, which provides history, analysis, and reports about the NFT market.

Check out OpenSea, an NFT marketplace that includes trading history, rankings, activity, and the ability to create NFTs at no charge. 

For a general overview of NFTs:

• Read the following Forbes.com article written by Cathy Hackl: Non-Fungible Tokens 101: A Primer on NFTs for Brands and Business Professionals (2/28/2021). This article is part of a Forbes.com series titled "What Brands Need to Know About NFTs."
• Take the "Introduction to NFTs: Non-fungible Tokens" course by Jonathan Reichental on LinkedIn Learning.