Attached Link: Geeps tutorials

Filter tip is easy. Use 2 cylinder one for the filter.

You should go to Geeps poser university and do all of his tutorials. It's free and you will learn all the basics and how to model stuff in poser.

You could also download one of the free modeling software and learn some of the modeling basics. I recommend Wings 3D. there is a forum here at R'sity for it.