The experience of being gathered by God leads into the experience of being guided by God. This was not just the experience of individuals, important though this is. The key to the development of Quakerism is the understanding of corporate guidance which tests and informs individual leadings. At the heart of this is the meeting for worship where Christ, the Inward Light, is present and is met. Fox often wrote that Christ has come to teach his people himself. From this teaching comes Quaker faith & practice.
As with any other testimony, there was always the danger of degenerating into legalism, a preoccupation with outward detail rather than the inner springs of action. Late in her life, Margaret Fox urged Friends to stand fast in that liberty wherewith Christ hath made us free (Gal 5:1). See 20.30-20.31 for examples of Margaret Fox's advice.