SharePoint License
Microsoft has made a great effort to make their tools available to everyone at a very reasonable price. There are discounts for educational and not-for-profit organizations.
I receive no payments for linking to these licenses. It is for your information only.
Microsoft SharePoint Online (Plan 1)
The least expensive license
Perfect for learning in your own SharePoint environment
License Information (link to Microsoft.com)
Microsoft 365 Business Basic (SharePoint)
You could run a small business with this license
No Power Platform development
License Information (link to Microsoft.com)
Microsoft Office 365 E1 (no Teams) (SharePoint/Power Platform)
Power Platform development (Apps, Automate)
License Information (link to Microsoft.com)