I have bought ITDB02 2.8 Touch Screen with Arduino UNO board. The Touch screen has a SD card holder. I have a SD card. I need to build a GUI interface - which files I should load and extract into SD card - how will the system come up?
How familiar are you with programming an Arduino?
Creating a GUI for one of these touch screens is not overly difficult but can be extremely time consuming depending on the complexity of the screen image.
Reading images from an SD card, whilst saving on memory, is often less than ideal due to the time delays in reading and drawing the screen.
You might want to have a look at some of the example sketches included with the UTouch Library available here Electronics - Henning Karlsen.