You can change your RAM in a 13" MacBook Pro. To do this you need a screw driver and a new ram. So first put your notebook on the table and take all the screws out of the notebook but be careful when doing this. Now place your fingers on top and the bottom and leisurely take out the back cover. Now there are two slots located at the right side and you have to push it out to remove the old rams. Now take the new ram and make sure you put it as the video showing and place it where you removed the old ram and push it inside down first and then push it down and now do the same thing with second ram. Finally place the back cover on top and tight with screws.