You can access Shipmnts Knowledge Base by clicking on help on top right corner of your Shipmnts App
Under the section Additional Resources you can click on Search Knowledge base for Answers or Understand the Basics of Shipmnts for accessing the Self Help material.
OR You can also access the Knowledge Base via the direct link - https://shipmnts.com/help
In this Knowledge Base search for the topics in search bar. Incase you have any suggestions for missing guides, feel free to write to us on support@shipmnts.com