Emails with links

I want to be sure before I start opening email that have links within them that I am safe. I have a newly pregnant daughter and I joined several savings club.  Now mommysgifts, mommysmyfreebies, mothersoffers, babiesfreebiemail and lots of other similar emails are popping up with the click here to get your free gift link enclosed. I normally NEVER open such emails but I am trying to be a super saver. If I crash my computer I will be a super loser instead.  Please give me any advice any of you may about these links and Norton 360 protection from harming my computer.