Here is an easy tutorial in Max:
Code:
http://www.maxbasics.com/modeling-tutorials/simple-models/plastic-shampoo-bottle
Here is an easy to follow video tutorial in C4D:
Code:
http://www.wonderhowto.com/how-to/video/how-to-model-a-shampoo-bottle-in-cinema-4d-15119_3/
Here is an useful NURBS bottle modeling tutorial for Maya:
Code:
http://www.highend3d.com/maya/tutorials/modeling/nurbs/170.html