Document Library Unique Permissions Setup

I'm in need of a SharePoint expert who can set up unique permissions for a specific document library within my Communication site.

Key Requirements:
- Configure unique Document Library permissions for specific users
- Ensure the settings are secure and user-specific
- Provide a brief training or documentation on how to manage permissions going forward

Ideal Skills:
- Proven experience with SharePoint, particularly Communication sites
- Strong understanding of Document Library permissions
- Excellent communication skills for user training and documentation