Its the fact that you can not grasp the things from the articles than you get it from the video tutorials. Here is the video tutorial for Matlab GUI which I searched from the youtube and placed it here. This video tutorial regarding Matlab GUI will teach you about the basics of Graphical User Interface. And by the end of the day you would be able to make the plots like mesh, surf as asked by the GUI setup made by you. After practicing it, you may move on to Calculator in Matlab GUI. Leave your comments, if you feel difficulty. Thanks.