This page explains how to download and install Inlage.
Go to the Inlage download page: inlage.com/download or use this link to download Inlage.
Open the inlage5.exe via double click and allow Windows the execution of the Inlage setup.
The setup will start and look like the image below.
Accept the Inlage User Agreenment.
Choose the folder where you want to install Inlage.
If you like, you can create a shortcut in the start menu folder.
Create a desktop icon and decide if you want to make .tex and .bib files always opened by inlage by default. Inlage project files .inlage will be registered in any case.
Run the installation.
Wait while setup is copying files.
Finish the setup and start Inlage if you like.
Congratulations! You have installed Inlage.
Your next step would be to setup a LaTeX implementation.