Below is an ever growing list of useful links that I have found in my day to day, which you may also find useful.

Office 365

• Modern Authentication in Office 365
• Gmail to Office 365
• Powershell Room Mailbox Commands
• Calendar Permissions Overview
• Onedrive for Earlier Versions of Windows OS
• Marking External Emails
• Exchange Folder Permissions

Sharepoint

• Emptying the Recycle Bin

Microsoft Server

• Enabling Auditing in Microsoft Server

Client Machines

• Enterprise Mode v2 Schema
• Windows Update - Powershell/CMD

Flowcharts

• Mermaid

Powershell

Passwords

• Password Encryption

Tools

• Nartec - IIS Crypto
• Certificate / Domain Validation