How to create a low poly model from a high poly model I have a high poly model and I want to shift the resolution down.

I know about baking textures, but I was wondering wheter this is the best solution. 

I don't need to capture all the details.

There is a function in zbrush that does this (you can choose how many percent of the polys that you want to keep), that shifts the resolution down but keeps most of the forms. It only tweeks it a little.
Your best option is to use the Decimate modifier. It allows you to control how much of your mesh your want to reduce.

The Decimate Modifier: