The article is devoted to the actual problem of studying the importance of online education resources for expanding the prospects of attracting future specialists to innovative activities in the field of social work. The necessity of using online courses in the context of self-educational activities of students as a characteristic feature of blended learning in the higher education system is proved. The expediency of mass open online courses for improval of the effectiveness of training social workers is determined. Attention is focused on the fact that online courses help to expand the opportunities for attracting students to provide innovative social services to various categories of clients, thereby acting as a factor of enriching their professional experience and increasing the resource potential for training social workers. The purpose of the article is to reveal the prospects of attracting students to provide innovative social services and opportunities to enrich their professional experience and increase the resource potential of training social workers through the use of mass open online courses. To achieve the goal and solve the problems of the study, theoretical, empirical and statistical methods of data synthesis and processing were used, the features of enriching professional experience in the field of social work were analyzed, and the possibilities of increasing the resource potential of training social workers through the use of mass open online courses were clarified. The importance of self-educational activities of students receiving education in the field of Social Work and the heterogeneity of online courses are confirmed. It is proved that expanding the resource potential of training social workers will help to attract future social workers to provide innovative social services to various categories of clients. The novelty of the study is to determine the prospects and opportunities of mass open online courses to expand the resource potential of training social workers for innovation and meet the self-educational needs of students.