NFT's or Non Fungible Tokens are tokens on the blockchain that usually represent an image, but it can be any other file, video, audio, pdf, etc.
Now, how do you get the URL of your typical NFT token? By typical I mean the ERC721 standard, there are other standards that are also used, some projects even code their own unique smart contracts, but in this video, I will not go into how to extract the URL from those other tokens as it's much more difficult, though the concept is the same.
While using the process I go through in the video, you will likely run into a lot of IPFS URL's . This stands for the InterPlanetary File System, which is a modern decentralized way of sharing files. It's not currently supported by browsers out of the box, you will need to install plugins to make it work, though if you are using the Brave browser it's a total breeze as it takes only a few seconds for the right extension to be added and you can start using IPFS.
Now, just because you find an IPFS link it doesn't mean the file is hosted on a blockchain, files are basically never hosted on blockchains as the cost per kilobyte stored on the Ethereum network is $50+ and a high-quality image is at least a few megabytes.
I hope you enjoy this quick tutorial.