Ahh, the dreaded first day with students. I see this really as an opportunity for them introduce themselves and for you to find out what they really want out of the English Classes. There are several options available for you to do:
1. Find out the strengths/weaknesses with the students.
2. The type of curriculum they wish to follow: Business English or normal English.
3. Style of teaching preferred: Teacher or student centred.
4. Schedule of classes: Book classes or teacher prepared material.
Let us know how you get on.
For some ideas, please look
here