In order to build a knowledge-based society and meet the needs of lifelong education, open learning opportunities are growing at exponential rates. While such growth is commendable, there appears to be a very strong demand for distance guidance services in open education programme selection. The purpose of this study was to develop the online self-directed inventory, the Academic Programme Preference Instrument (APPI), for the lifelong learners in Hong Kong. The methods of questionnaire survey and standardized psychological measurement were employed. In this study, 2775 respondents were surveyed in order to identify and verify the inventory, using a multistage stratified cluster sampling technique. The inventory consists of 112 items under nine personal attribute types, namely: organizational; mechanical; scientific; sociological; mathematical; literary; musical; aesthetic; and social service. Eighty-nine distance and continuing education professionals were invited to help to determine the most important personal attributes that a learner should possess in order to meet the minimum entry requirements of each of the 73 education programme categories that account for over 800 open education programmes in Hong Kong. The online APPI, in English and Chinese versions, has been linked to the homepage of the Hok Yau Club in Hong Kong for the public to use freely. As Hong Kong aims to foster lifelong learning in a knowledge-based society, it is expected that the APPI can help lifelong learners to make wise open education programme selection and to enhance learners' success in pursuing continuing education. (Contains 6 tables.)