So I purchased 16GB of Crucial RAM and it just came in. I am going to try and tackle this hopefully it gets installed correctly. Can you guys recommend any guides or tips? Does it have to be in certain slots? Do I leave the Apple stock RAM where it is and just put these 2 in the opposite sides (there are 4 slots if I understand correctly)? I plan to keep my Apple stock 8GB and install this 16GB for a total of 24GB RAM.