where can i have it the tutorial

For documentation for configuring image styles, you should probably start with core handbook on working with images
For detailed examples about the image style configurations this module provides, you can click on any of the images on the project page to see the settings that produce those results.

Beyond that - if there is a question that is not already answered on the project page - please describe what you have done so far, what you want to achieve, and what you are having trouble with. This module does not have a lot of stand-alone documentation, as it mostly *extends* the existing core methods for image style manipulation.

Closing this issue, assuming that the answer was satisfactorily for OP. If not feel free to reopen this issue by stating your request more explicitly.