Dana,
Flaxseed is delicious and awesome for you, so you have a lot to look forward to. First, is the bag you bought ground flaxseed? Or does it consist of actual seeds? If already ground you can mix it into oatmeal, yogurt, baked sweet potatoes, cottage cheese, any kind of bean/meat loaf burger, baked goods, cereal, etc. It is okay to bake with the ground flax seeds so long as there is enough moisture in the recipe to protect the fatty acids. You cannot, however, cook with the oil. If what you have is whole seeds then you need to grind them up before using them because the outer shell is too hard to be digested properly and they will simply pass through your system. The best tool for this is a coffee or spice grinder, but a food processor will also work (heck, even a blender or mortar/pestle would work, but I've never tried either). From there you can put it into any foods you like. One warning, start incorporating flax seeds slowly as they are very high in fiber and too many at once could leave you feeling fairly uncomfortable. Start at one teaspoon and every two days or so move up a teaspoon until you are at the amount you'd like to eat (one to two tablespoons per day).
Hope this helps!
Mattea