
Begin your crypto journey with practical steps to use metaMask, mint NFTs on OpenSea, and explore web3 concepts like NFTs, polygon, airdrops, and the metaverse.
Explore what an NFT is by applying an eight-question semantic framework to distinguish fungible and non-fungible tokens, using real-world and digital examples like gold, bitcoin, diamonds, and crypto kittens.
Explore how nfts are built from audited smart contracts with a unique contract address and token ID, including metadata, functions, and the ERC-721 standard that powers images, transfers, and marketplaces.
Explore the standardized NFT parameters on OpenSea, including thumbnail, name, description, url, hidden content, traits, polygon as the blockchain, and listing options like public or private sales and currencies.
Introduction
I had a job interview in 2014 where I was asked what is Bitcoin. All I could say back then was that Bitcoin was “Internet Pirate Gold” because of a documentary I had seen on the Silk Road. Fortunately my answer was satisfactory at the time and I got the job. Throughout the next few years I would learn more about the blockchain.
In a nutshell:
Bitcoin allows for a number to be securely transferred between addresses. The sender subtracts this number from their total and the receiver adds this number to their total. There is a rule that prevents the sender from sending a number larger than their total.
Ethereum allows for more complex logic to be securely carried out. Various applications can be built and a range of different types of tokens can be created and transferred, such as an NFT.
Both Bitcoin and Ethereum use a blockchain for security reasons, however this comes at a huge computing cost and so high fees are needed to complete transactions securely.
Fortunately for us new technology has emerged which allows us to enjoy the security of the blockchain without the high fees. The Polygon Network can do all the complex logic of Ethereum at a fraction of the cost.
Technically, Polygon is a protocol and a framework for building and connecting Ethereum-compatible blockchain networks. Aggregating scalable solutions on Ethereum supporting a multi-chain Ethereum ecosystem.
But this course is for people who want to use blockchain and don’t necessarily want to understand exactly how it works.
Part 1: How to use blockchain
How to setup a Metamask account - your passport to Web3
How to connect to the Polygon Network - the best blockchain to begin with
How to get Matic and Wrapped Ether tokens on Polygon
How to mint your first NFT on OpenSea
How to buy your first NFT on OpenSea