how to operate this app

free of cost

Individual license: Download and install Creative Cloud Desktop App. 

https://helpx.adobe.com/download-install/apps/download-install-apps/creative-cloud-apps/download-creative-cloud-desktop-app-from-web.html

From the Desktop App, click Install button under Adobe Illustrator.

See Technical Requirements below for more details:

• https://helpx.adobe.com/download-install/apps/system-requirements/creative-cloud-requirements.html
• https://helpx.adobe.com/illustrator/desktop/get-started/learn-the-basics/technical-requirements.html#ai-on-the-desktop

Hope that helps.

is this a stock contributor question?

Be more specific.

Operate which app? 

What online earning platform are you talking about?