The basics: As a new user all you need is to create a Blockchain wallet Bitcoin Block Explorer - Blockchain to hold your BTC. Once you created an account you will be assigned with a unique Bitcoin address. You can disclose this to anyone to process payments.Things you should know before entering further:
A blockchain wallet
A BTC Address
BLOCK CHAIN WALLET:It is an online wallet where anyone can create an account for bitcoin transaction for free. Once you opened an account you will be given a unique BTC address to share with others. BTC address is just like your Bank account.
BTC ADDRESS:It is a 34 Alpha Numeric case-sensitive characters which have similar function as your bank account number.