The use of educational resources as an integrative tool of health education for the prevention of diabetic foot facilitates the process of knowledge and adherence to self-care. The current study aimed to present the process of building an Open Educational Resource (OER) on self-care of the feet of Diabetic people entitled "Have you taken care of your foot today? Materials and Methods: This is an exploratory, descriptive study, with a qualitative approach, conducted from November 2019 to March 2020. The five stages of construction of the educational resource in E-book format were descripted and validated as a product of the Professional Master in Health and Technology Teaching at the State University of Health Sciences of Alagoas-UNCISAL, integrating the master's thesis of the corresponding author. Result: Description of the educational resource's building in the form of e-book, elaborated as a product of the master's in education in Health and Technology. The construction was composed of five stages, comprising from the systematization of the contents to the insertion in the CAPES repository. Conclusion: The educational resource achieved the theoretical, methodological, and operational dimensions. The relevance of educational resources cannot be denied in the context of health education and must be regularly rethought and elaborated to keep up with the demands of socio-cultural changes. Beyond the construction of educational resources, it is essential to propose a reflection about the obstacles that still limit the accessibility and implementation of these resources to the public, thereby they can effectively contribute to health promotion and prevention strategies.