4. Ethereum wallets
It is important to obtain a thorough understanding of wallet apps and how Ethereum transactions operate in general prior to purchasing Ether. There are several various types of wallets: you can use a hardware wallet as well as a wallet supported by a cryptocurrency exchange: a laptop version, a mobile/web client.
At Ethereum.org, official Ethereum wallets are available for free. Focus on the next point to know the types of Ethereum Platforms.