This document provides instructions for opening Microsoft Teams across different devices and platforms. It includes steps for using Teams on laptops with and without the app installed, as well as on mobile devices. The guide outlines how to access Teams meetings and calls through the desktop, web, and mobile apps using an Outlook account. It also notes that the web version is not recommended except in cases where the desktop crashes. The document was created by Asmit Ghosh and can be used as a reference for Teams usage.