You will see on your left side a box with different icons, such as " Search", "Layouts", " Background", "Holidays", " Frames", etc. This is where you can play around with tools and design elements.

For example, to choose free photos from DesignBold, click the " All" box >> "Free photos "

Now, you can see many free photos here, and you can use them:

If you have your own images, to upload them, click " Upload" >> "Upload your images ". (You can drag & drop your images instead of choosing " Upload your images ")