In short, SharePoint 2010 workflows in Office 365 are retired. The only supported way to create automation is Microsoft Power Automate (ex. Microsoft Flow).
Date
Action
August 1, 2020
SharePoint 2010 workflows will be turned off for any newly created tenants.
November 1, 2020
SharePoint 2010 workflow services will be removed from existing tenants.
Microsoft 365 learning pathways is a customizable, on-demand training solution designed to increase usage and adoption of Microsoft 365 services in your organization. As of 5/21/2019, Custom Learning for Office 365 is being renamed Microsoft 365 learning pathways.
Microsoft 365 learning pathways offers:
A fully customizable SharePoint Online communication site – The learning pathways training portal can be customized to add your organization’s help, support, and community content
Easy provisioning – Provision learning pathways from the SharePoint Online Provisioning Service with just a few easy steps
The ability to create your own training playlists – with learning pathways, you can create targeted training playlists to meet the unique needs of your environment
Up-to-date content – Learning pathways provides content through a Microsoft online content catalog, so the content at your site is regularly updated
This is a solution designed for SharePoint Online which provides numerous web parts, extensions, and other components which you can use as an example and inspiration for your own customizations.
SharePoint Communication Sites have great out-of-the-box capabilities, but the out-of-the-box capabilities may not always be sufficient for your scenarios. This is exactly why you are able to include your own customizations. This solution addresses common scenarios and tasks you may encounter when introducing those customizations, and provides examples and guidance on how you might address them including:
Automated provisioning of simple demo content within a communication site
Automated provisioning of the whole solution to any tenant within minutes
Automated configuration of Site Scripts and Site Designs at the tenant level using the PnP Remote Provisioning engine
Implementation of different customizations for SharePoint Online
Usage of Office UI Fabric and reusable PnP SPFx controls within the customizations
A group of Microsoft employees released a tool for testing Office 365 API, Microsoft Graph and Office 365 Management Activity API. Of course, there are tons of other options but they tried to make it easy to use.