JJ, with the greatest respect, the biggest issue you have is your complete lack of knowledge about cameras. Yes, by all means get a new card - if you got the one that has the issue from a reputable dealer, return it if you can do so.
BUT, you need to get some experienced people to help you understand the basics of camera technology. I would strongly suggest you engage with your local camera group - there is a site called meetup.com that may help you there. If not search for a local photography club or society on Google. Get someone who has experience to give you some basic lessons and help you set up to take photos.
Youtube has some videos on the basics of photography, and if you go to you local library's on-line catalogue, do a search for a listing for lynda.com. If it comes up as available it is access to a huge wealth of professional-quality training on photography from the most basic to expert level. It's a fantastic reference. If the library does not have it, you can go directly to the website www.lynda.com and get a free month, no obligation trial. Use that month to get some basic photographic courses under your belt.
I particulary recommend the courses by Ben Long - Photography Foundations.
cheers, TREVOR
The mark of good photographer is less what they hold in their hand, it's more what they hold in their head;
"All the variety, all the charm, all the beauty of life is made up of light and shadow", Leo Tolstoy;
"Skill in photography is acquired by practice and not by purchase" Percy W. Harris
