Azure AD samples Bob German
Implicit Flow - From the 30 Days of Microsoft Graph blog article series, this sample shows how to use ADAL (with the Azure AD v1 endpoint) and MSAL (with the Azure AD v2 endpoint) to call the Microsoft Graph from a Single Page Application in a web browser
Client Credentials Flow - Not yet documented, this sample shows how to acquire a token with certificate authentication and Client Credentials flow in order to use application permissions with the SharePoint REST API