After you have created your PayPal account, find the Tools and [PalPal Buttons] option and [Create new button]. You will get something like below.

• Change to "Buy Now" button
• Enter a name
• Tick the "Add drop-down menu with price/option"
• Enter a name for the option
• Enter the rates and prices.
• Click "Done"
• Click "Create Button"

....... continued below

Please Note, the example above is the most common method of adding a PayPal Button. You will find more information on the PayPal site

Now you need to "Copy" the HTML Code created

• Click [Select Code]
• Right Click on Code
• Click [Copy]