In this paper, we present a real in-streaming case of learning about how to program with the z-tree software to design experiments on economic decision making for the members of the NECE Research Unit in Business Sciences, in Portugal. This real case of in-streaming-learning was created to respond the need of a teaching method based on new technologies for people who could be in different parts of the world and with different time availability, but they also need to learn to program z-tree to use it in their experiments. Researchers and students learned the Ztree software applications in business research and economic decision making. Specifically, they learned: What is z-Tree software?; What is z-Tree software for?; What advantages does it have? and What applications can you obtain in business research?; How to get it for free?; Technical requirements; The structure of z-Tree software, ...