What kinda of questions should I ask?

Law:

• How many years of unversity is needed?
• What subjects you need to do during high school to get a place in univeristy to become a lawyer?
• How much will a graduate lawyer receive on their first job?
• Is sitting for the bar as hard as passing exams at university?

Medical: same questions as above.

• Once you graduate from university, will the graduate be a medical intern and what is the salary?
• Are the hours long?
• Do you get stuck with all the grave yard shifts?
• Can you boss the nurses around, (give them awful jobs to do eg: clean smelly patients before you, the doctor sees them) especially the mature nurses who gave you crap when you were a medical student? ;)
• Will the degree be recognised world wide eg: if you have a degree in the usa, will your medical license be applicable in other countries?
• Do you need to update your skills regularly?

Custom: As per lawyer questions.

• Is knowing another language compulsory for promotion later on in the career?
• Do you need to love the sea?
• Do you have to go to a university or college to qualifiy?
• Do you have to have excellent communication skills?
• Do you need to know the regulations and laws inside out?

Only things I can think of at the moment :)