Since it requires motivation and enthusiasm, and is done unplanned and spontaneous, informal learning can be mentioned as the most effective form of learning. Such learning is the result of daily activities that can take place anywhere, in the home, in the workplace, in the religious institution, and even in the educational institution. Today, the most important source of information, without time and place constraints, is definitely the Internet. With the emergence of social networks, there is a need for virtual socializing and creating awareness, as well as the need for learning. Today there is a large list of social networks, but the most important ones are Facebook, YouTube, Instagram, Twitter, Linkedin and Pinterest. The subject of this research was the role of social networks in lifelong learning with an emphasis on informal, on a sample of local Internet users and social networks. The survey was conducted through a questionnaire survey with a sample of 312 respondents. This graduate work has confirmed the positive influence of social networks on informal learning. Increased use of social networks significantly affects the level of informal learning.