Let\'s start with the explanation what Ethereum is. Ethereum is cryptocurrency like Bitcoin based on smart contract. It is a decentralized network developed in 2013 by the Vitalik Buterin. On this platform, users can codify, secure and trade with almost anything like voting, crowdfunding, contract and agreement and so on. Now, let\'s explain its currency. Just like we said in the text above, Ethereum is platform, Ether is currency. It is currency like Bitcoin with the main purpose to make financial transaction easier. Ether can also be mined just like Bitcoin.
Bitcoin was the first cryptocurrency ever, so it is logically that Ethereum is more technological advanced and easier to use. The founders of Ethereum claims that Ether is not currency as much as it is Crypto-fuel which means that Ether has main purpose and it is to pay for Ethereum platform and not buying stuff with Ether online.
Ethereum (ETH) vs Ethereum Classic (ETC)
Ethereum Classic is a so called hard fork from original Ethereum. The main reason for creating new currency was hacker who find a way to steal $60m worth of Ethereum coins. So now entire network is separated to the two division.
How to buy Ethereum (credit card, wire transfer and cash)
Ethereum exchange is surely the best way to buy Ether, because it is Ethereum official exchange. There are some other ways to get your Ethers. For example Coinbase is also Ethereum exchange and literally anyone can buy Ethers there because you don\'t really need some technological knowledge, you just need to have Coinbase account, choose payment method how are you paying and click buy Ethereum. It is almost same thing with the different exchanges, but there can be a difference between exchange rate, for example on CEX.io exchange rate can be around 7% higher than on Coinbase. Besides Ethereum exchange and CEX.io same functionality has exchange like Coinmama, Changelly, Coinhouse, Bitfinex and others.
Another solutions how to get Ethereum are to buy it with cash from some individual. You can find this individual on LocalEthereum, which is a marketplace that are connecting people that are buying and people that are selling Ethereums. The other solution is to get yourself mining rig and start mining Ethereum.