A display apparatus, comprising: a display; a receiving unit configured to receive a user input signal; and a controller configured to control the display to display a plurality of content images corresponding to a plurality of contents, to control the display to display a first control image in a first content image among the plurality of content images to indicate that the first content image among the plurality of content images is to be controlled by a user input received via the receiving unit, the first control image associated with a type of a first content corresponding to the first content image, to control the first content image according to a user command received from a user input device associated with the displayed first control image, in response to a user input signal for controlling a second content image among the plurality of images being received via the receiving unit, to display a second control image in the second content image among the plurality of images, the second control image associated with a type of a second content corresponding to the second content image, and to control the second content image according to a user command received from a user input device associated with the displayed second control image, wherein a shape of the first control image is different from a shape of the second control image. a display; a receiving unit configured to receive a user input signal; and a controller configured to control the display to display a plurality of content images corresponding to a plurality of contents, to control the display to display a first control image in a first content image among the plurality of content images to indicate that the first content image among the plurality of content images is to be controlled by a user input received via the receiving unit, the first control image associated with a type of a first content corresponding to the first content image, to control the first content image according to a user command received from a user input device associated with the displayed first control image, in response to a user input signal for controlling a second content image among the plurality of images being received via the receiving unit, to display a second control image in the second content image among the plurality of images, the second control image associated with a type of a second content corresponding to the second content image, and to control the second content image according to a user command received from a user input device associated with the displayed second control image, to control the display to display a plurality of content images corresponding to a plurality of contents, to control the display to display a first control image in a first content image among the plurality of content images to indicate that the first content image among the plurality of content images is to be controlled by a user input received via the receiving unit, the first control image associated with a type of a first content corresponding to the first content image, to control the first content image according to a user command received from a user input device associated with the displayed first control image, in response to a user input signal for controlling a second content image among the plurality of images being received via the receiving unit, to display a second control image in the second content image among the plurality of images, the second control image associated with a type of a second content corresponding to the second content image, and to control the second content image according to a user command received from a user input device associated with the displayed second control image, wherein a shape of the first control image is different from a shape of the second control image.