Phishing emails vary in how difficult they are to recognise. Most have a similar structure - a personal salutation, an urgent reason for action and a link or attachment that could be your undoing. You should know that your Amazon account or your bank would never ask you to enter your details via email.
If you receive an email, you should not trust the sender's address as it can easily be faked. If the email contains a link, you should check where it leads to without clicking on it! (In general, you should always make sure that the internet address you are on is trustworthy).
Also, do not open any file attachments that you do not explicitly expect and always apply:
If you are suspicious of a message, it is better to ask the supposed sender again in person or through another channel.
This may take a little time, but it can prevent a lot of damage.