Enterprise systems must be used effectively to maximize their benefits. Given their complexity and integration of standard business processes, they pose significant challenges for employees’ learning. Users need to learn how to access a system and its data and how to leverage the information it provides to perform their daily tasks effectively. Based on a literature review, we identify three context-oriented forms of learning, which affect a user’s level of effective use: learning via instruction, self-learning, and learning via social interaction. We aim to conduct a longitudinal case study to explore learning during an implementation project and develop a research model to measure the effect of learning on individuals’ effective use of an enterprise system. The extension of the nomological net-work of the concept of effective use by an integration of the effect of different forms of learning will be the main contribution of our research.