What is Ethereum?
Ethereum is based on blockchains distributed ledger technology. ETH is the native currency of the Ethereum blockchain. The ethereum blockchain has the added feature of not just storing data transactions, it can also store programs. The programs are called "Smart Contracts". The Ethereum blockchain is an open source data platform which allows developers to upload applications to its blockchain. These applications (smart contracts) will run on the blockchain, perform as designed, anywhere in the world, completely autonomously. https://ethereum.org/beginners/