Updating your Microsoft Office to the 2019 version is a straightforward process that can be done in a few simple steps. Here's a more detailed guide on how to do it:

Purchase the software: The first step is to purchase the Microsoft Office 2019 software. You can do this by visiting the Microsoft website and purchasing a license, or by purchasing a retail version of the software from a retail store.

Download the installation files: Once you have purchased the software, you will need to download the installation files. This can be done by visiting the Microsoft website and downloading the files from there, or by using the installation disc that comes with the retail version of the software.

Run the setup program: Once you have the installation files, you can run the setup program by double-clicking on the setup file. This will begin the installation process.

Follow the prompts: During the installation process, you will be prompted to accept the software license agreement, choose the installation location, and select the components of Office that you want to install. Follow the prompts to complete the installation process.

Activate the software: After the installation is complete, you will need to activate the software using a valid product key. If you have a valid license for an earlier version of Office, you should be able to enter the product key during the installation process to activate the 2019 version. If you don't have one, you can purchase one and then activate.

If you have an office 365 subscription, you can log in to your account and download the 2019 version from there.

It's important to note that if you have an older version of Office installed on your computer, the new version will overwrite it, so you should make sure that you have a backup of any important files or settings before proceeding with the update.