Not a Microsoft Office person? No problem. If you want to use your Google Slides presentation with webinar.net, simply open your Slides presentation in a browser.
Go to the File menu, and download as Microsoft PowerPoint (.pptx).
Save that file to your computer, then upload via the webinar.net scheduler (click your webinar title, navigate to the "upload" tab.)
Or, you can upload via the webinar.net Presenter Console. Simply click that link and go to the "Content" icon, where you’ll see an upload button at the bottom right corner.