Luce, before you click on anything, hover the mouse over the place where it says 'click here' and then look below in the lower left hand corner of your web browser, just above where your start button is (on firefox or chrome, it is on the other side over the date/time on IE) it will display the URL address of where that link is going.
So when you see something like that big envelope and you hover over it, before clicking, you should see in that url address that pops up something like
http://www.quiltingboard.com/.... if it does not say that, it is a spam or something taking you to a virus loader.
Hackers and thieves will try to mask their links so that it looks like the website you are on, always the easiest way is to see the url address it is trying to take you to.