When you are in "Visual" Editor you will see the following icons.Â Click on the icon to Insert Image.Â
This will bring up a small blank box.Â Wait for a moment and you will see this.Â
You can now choose your image from an URL or click on the camera (blue box) to upload from your computer.Â
You can add a description and dimensions or leave it blank.Â
If the picture is too big you can later edit it by clicking on the pencil and changing one of the dimensions.Â Just make sure to tick "Constrain proportions".