After activating the plugin, when you add a new page / post, under Common Category you will find the Gutenspot Hotspots Gallery. 

After you click on it, a new block will be created

Now you need to add an image

After you added the image you have the possibility to add a new pin.

Simply click on Enable add new pin and click anywhere on the image to drop the pin.

A new Pin was created. You will find in the right panel what types of content you can have into the hotspots.

Static Text – Here you can add a Headline and a subtitle into the hotspot

WooCommerce Product – You can search and choose to embed a woocommerce product into a hotspot! 

Blog post – You can search and choose to embed a blog post into a hotspot! 

Amazon Product – You can search and choose to embed an amazon product into a hotspot!