Looking at the 30,000ft level, a NFT Video series is a netflix type service that allows you to watch a series of videos that the content creator of the NFT has created. The NFT is proof of ownership that you have purchased the rights to view the series, much like PPV (pay per view)
NFTs (Non-fungible Token) are part of an Ethereum based blockchain. The concept is similar to cryto-currency, with the token is supported by a smart contract. This smart contract supports the token and cannot be updated and can invoke other smart contracts. Based on the smart contract, you are able to potential gift, sell or transfer the NFT as well as support financial rules under these transactions.
In order to get a NFT you must have a wallet that supports them such as MetaMask, Coinbase and many, many, many, many others. After your purchase which is in some form of a Ethereum, you must transfer the NFT into your wallet. Now you are able to use it for different metaverses and web apps.
There are different blockchains that support NFT such as Ethereum (ETH), Polygon (MATIC), Binance Smart Chain (BNB), Avalanche C-Chain (AVAX), Fantom Opera (FTM), and many more.
A consumer or business can purchase a NFT on many different market places such as Opensea, Nifty, Crypto and many new services such as bimah.io