If you are using domain-based email "email@example.com" you'll either be using Google Workspace or encountering it regularly. Google offers qualifying non-profit and academic institutions it's Workspace Standard offering for Free (or steep discount on certain versions and services); it's important to understand how it's apps and services work and how they co-mingle with email, calendar and document creating services on other platforms. Hi! Microsoft 365 ; D
I've been using and deploying this platform since Google began offering it in 2007: it's complexity and reach have grown considerably since then. When teaching and/or solving problems in this eco-system I place my focus on Google Chrome, the Admin Console, the Gmail Web Portal, and increasingly, Google Drive and their Shared Drive workflows. Typically, I'd evaluate your existing systems and tailor technical help or teaching to your specific situation.
Chrome Sync and encryption
Workflow between users and accounts
Chrome efficiencies when using a mobile device
Profile Management: data, bookmarks, history, extensions
User creation and management
Portal branding and customization
Naming Strategies, Aliases, Email and Groups
Security, Super Administrators, and Admin logs & alerts
Navigating the Web Portal
Keyboard shortcuts and managing email
Customizing Gmail and tweaking "see all settings"
Using aliases and other accounts in settings and compose
Sharing Files, Folders, Drives
Organizational strategies in Drive Portal
'Drive for Desktop' best practices and deployment
'My Drive', 'Shared Drives',(Workspace Standard) 'Shared with Me'
APPS: DOCS, SHeets, slides, forms
File and Folder ownership
Version History and revisions
Collaboration (commenting, review)
Working with cloud, downloaded and offline files
Creating team calendars
Creating a personal bookable calendar
Calendar management and customization
Sharing/not-sharing internal calendars/resources
Group and Space Chat
Project Management in Chat
Working with other teams and external users
Takeout: Remove/copy data from a user
Keep: Notes and simple project management
Meet: Video calls, meetings and presentations
Contacts: Management and using on other devices
Maps: Location history, custom maps and personal places
Google [My] Business: Maintaining your business in Google's products
This collection is just some examples of what kinds of focuses I typically have or recommend with Google Workspace.
Once we've reviewed your particular situation we are able to focus on what matters and/or will make the most impact on your organization.