To install Office 365, you need to first navigate to the Microsoft 365 website and sign in with your account. Then, locate and select the option to install Office apps, which will download the necessary installer. Finally, run the installer and follow the on-screen instructions to complete the installation process. 

Here’s a more detailed breakdown:

1. Sign in: Go to www.office.com or office.com and sign in with your Microsoft account. 
2. Locate Install Option: From the Microsoft 365 home page, find and select the option to “Install Office” or “Install apps”. 
3. Download Installer: Select “Microsoft 365 apps” or similar wording to download the installer. 
4. Run Installer: Locate the downloaded file (usually in your Downloads folder) and run it. 
5. Follow Prompts: Follow the on-screen instructions, which may include selecting installation preferences and accepting the license agreement. 
6. Activate: After installation, open an Office app (like Word or Excel) and sign in with your Microsoft account to activate your subscription.