To learn how to post on Instagram from computer, you need to first launch Instagram on the web. After that, click on the + icon. Drag the files from the pop-up window. You can also select the files from your PC to add the post. Now, edit the image as per your requirements and then select Next. Write a caption and add a location in the section of Add Location. If you want, you can also restrict commenting from the “Advanced Settings”. Now, share the post by clicking on Share.