- PhD in Agricultural Economics, Cornell University, United States (1995).
- MSc in Agricultural Economics, Oklahoma State University, US (1991).
- BSc in Agricultural Economics, Oklahoma State University, US (1988).
- Diploma in General Agriculture, University of Swaziland (1983)
Dr. Seleka has worked as an Agricultural Economics lecturer in various capacities in universities overseas as well as at the Botswana College of Agriculture (renamed the Botswana University of Agriculture and Natural Resources) and the University of Botswana. He worked in the Ministry of Agriculture for a number of years. He has also held various senior positions within the Botswana Institute for Development Policy Analysis (BIDPA) culminating in his promotion to Executive Director. Dr. Seleka conducted various consultancies and studies of national importance in the areas of poverty reduction, social development policy, agricultural sector reviews and regional trade. He has participated in international, regional and national forums and between 2002 and 2004, was a Member of the Agricultural Economics Education Board for Eastern and Southern Africa.
He has served as a Member for different forums, among them the Botswana Agricultural Sector Trade Forum and the National Committee of the Southern African Development Community (SADC) Food, Agriculture and Natural Resources Policy Analysis Network.