What is the conversation mainly about?

W: I have read the instruction, but I m still not sure how to use the camera.
M: Really? Let me see. Oh, it’ s not so difficult. First of all, turn it on.
W: Got it!
M: Then remember to match this point to the green line.
W: That’s all?
M: Pretty much. Finally you press this button when you take pictures. Make sure to recharge the batteries if the power is cut off.
W: It’ s really not so difficult.
M: Yeah, and try not to drop it. It’ s fragile.
W: Good advice. Thank you so much.
M: With pleasure.