Tutorial about how to create and use scheduled actions in Odoo
Tutorial about how to create and use ssearchpanels in Odoo
Tutorial about how to create and use statusbars in Odoo
Tutorial about how to add the calculator widget to use calculation options within a field.
Odoo 13 Development Tutorials For Beginners
Odoo 13 Development Tutorials
Odoo Tutorials
Tutorial about how to write classes and widgets in Odoo
Tutorial about how to create and use email templates in Odoo
Tutorial about how to create a website published button too quickly (un)publish content and to navigate between the backend and frontend.