After an initial reading, some people prefer to keep a running list of questions and then set up a session when they have a significant list. Sometimes the session goes for an hour, and sometimes it is only a half hour.
The only limit on the questions is that I don’t read the future and don’t give advice. If someone does ask for advice, I look at the issue and give them information about their different options; for example, I review why each option is appealing to them. Within those boundaries, the reading covers a wide variety of topics including relationships with others, past lives, areas of physical pain, and blocks to creating something they want.