Mrxfixit

I got the legendary edition for the game and I entered the code for the skin, specializations and map pack. My first question is how do we get the map pack, do we get it the maps when they are released to the public, or am I just missing it? The second question is how do we put on armor skins (like the forest one that I got for pre ordering it at gamestop)? Never mind I figured out the 2nd question, it just looks different then I thought it would look.