Ethereum is a decentralized platform where engineers can create smart contracts – which are decentralized programs that automatically execute, without the need for a centralized intermediary.
Chainlink is a decentralized oracle network that enables smart contracts to securely connect with any data and system outside the blockchain such as data providers, web APIs, IoT networks, other blockchains, enterprise backends, traditional bank payments, and more. Chainlink is critical to connecting the Ethereum ecosystem to the rest of the world.
More about Ethereum
Ethereum 101: https://www.coindesk.com/learn/ethereum-101/what-is-ethereum
Ethereum mining: https://cointelegraph.com/ethereum-for-beginners/how-to-mine-ethereum-guide-for-beginners
Blockchain demo, and cryptography “magic”: https://andersbrownworth.com/blockchain/
Learn more about Chainlink
If you’re a developer, visit the developer documentation https://docs.chain.link or join the technical discussion on Discord https://discordapp.com/invite/aSK4zew