could someone please tell me how to make curved lines in photoshop as this will help me alot in making textures.

google 'how to curve line photoshop' or the first result should be a wikihow link on how to draw lines

Specify.

You can draw curved lines with the brush-like tools, by editing the anchor points on a line you drew with the pentool or by creating shapes like a circle.

Your question is not clear.

Pen tool, click 2 spots to add anchor points, click in the middle of the line to add a bendy point thing, then drag it and fuck around with all the points, it will take about an hour and a half to learn it to its full ability