We agree on very little doctrine. Some believe baptism is necessary for salvation, some don't. Some believe smoking is okay, some don't. Some believe that drinking alcohol is okay, some don't. None believe that doing something that harms his neighbor is okay.
None believe that breaking the laws of the secular authorities is okay.
Home church meetings are often unstructured, and vary from week to week. Sometimes they may be moved to pray, or to read or to sing, or to discuss a spiritual topic. Sometimes they might share their experiences with each other, or emotionally support or spiritually and minister to each other. Freedom is a major component of home churches. All are given an opportunity to speak, as they are moved to do so.