Hi LF,
The first session is usually all about getting an idea of who you are and what interests you. Specifically, name, address, date of birth, what school you go to, what's your favourite subject, what sport do you play etc, etc, etc.
Questions are generally non specific, eg what things upset you, what things make you happy etc.
Second session is where things start to get down to business. How do you feel about yourself, what makes you think you're TG, have you been abused, etc.
Most of your time will be spent answering questions. Generally speaking the therapist sets the agenda in the first couple of session. You set the agenda later when you want to spend time on more serious matters you want to work on.
Hope it goes well for you. Keep in touch and let us know how you are coping.
Huggs
Catherine