PROBLEM TO BE SOLVED : To provide a display system, by which buyers' comprehension is improved and a building or the like can be dealt with at ease through explanation of items in a series of procedures from application to transfer in real estate selling and buying.SOLUTION : A series of procedures from application to transfer in real estate selling and buying with explanations, documents and samples required for procedures are displayed as image data, character data and audio data for each explanation item, and these data are expressed by a computer so that the sufficient comprehension of a real estate buyer can be attained.