An ideal society is a learning society in which each one receives sufficient education in the whole life. The formal education system cannot satisfy people's abundant and varied learning needs, so informal education and irregular educations are produced. These types of education occupy the most part of adult's learning opportunities. During independent learners design and execute their own informal learning activities, they require helps in some aspects. Libraries are the most suitable institutions for providing helps to independent learners. If libraries can develop functions of information supply, consultation, guidance, and brokerage, they would become the most beneficial element for the fulfillment of people's lifelong learning.