Image Manager from inside the WYSIWYG editor. You MUST save them and upload them to the Image Manager. Do not just copy and paste from another site. Because of ADA compliance, all images must have alternative text. To add Alt Text, click on the Properties Tab.
The first time you want to insert an image, create a New Folder with your name (i.e. M Bond). Then upload all images (green + sign) into your folder.