This tutorial page is for PiTFT that came as a kit. If your PiTFT is already assembled, skip this step!
Before you start check that you have the parts you need: an assembled PiTFT plate with the 2.8" screen, extra tall female header and the 2x13 IDC socket. Note that it is normal for the screen to be 'loose' - this is so its easier for you to solder the connector on!
Check also on the back that the TFT is attached and that the flex connector is seated into the onboard FPC socket.