I used to work for a mental health team and an 'Early Intervention In Psychosis' team is basically just a team of social workers and community psychiatric nurses. They work with people, usually between the ages of 15 and 35 who are showing early signs of psychosis or who are experiencing their first episode. Basically (if it is anything like the one where I worked, which I would think it is) you will be allocated either a nurse or a social worker who will ring you up to make an appointment to come and see you. They will then come and see you on a regular basis just to monitor and to sort out any worries you may have. Please don't worry at all about this because it will not be scary in the slightest, they will just give you some support and all the nurses and social workers that I know are lovely! Hope this helps a bit.