You will need the following if you live in UK. A Bank Account with (ideally) a Debit Card. A mobile phone to connect with your account. An email address to connect with your account. If you live in the US you may need your social security number.
Stage 1: You will be asked to enter your First Name, Last Name, Email Address, Password, and your address. Please make your password very strong. Write down your password and keep it somewhere safe - and also make a backup of this password.
Stage 2: You can connect your PayPal Account (if you live in USA - not yet available in the UK), your Bank Account, or Credit/Debit Card to your Coinbase account via the "add payment method page".
However, we recommend that you pay via Debit or Credit card for an instant transaction when purchasing Bitcoin.
Stage 3: Go to the “Buy/Sell” section in the top menu. If you want to buy Bitcoin cryptocurrency click "Bitcoin". Input the amount of Bitcoin you wish to purchase. Click the “Buy Bitcoin” button, and you’ll be asked to confirm the transaction. If the transaction is $100 or more you will receive a further $10.00 free.
Once you have confirmed the transaction you are now the proud owner of a Bitcoin (or part of a Bitcoin).
You can now purchase other alternative coins with your Bitcoin purchase - more on that later.