On the edit module the image upload option is located on the left side of the content.
You can simply drag and drop images on the option panel or basically click on the ADD FILE button to upload. Although the eDirectory system proportionately resize images it is advisable to upload images that are landscape oriented and at least around 900 x 400 pixels dimension or lower. Also, you may use a 3rd party software application to not just resize your images dimensions but also lower down its file size (ideal image file size: 200 to 250kb) without sacrificing its quality. Please do remember that file size have an impact with the loading time of your images.
Clicking on the EDIT icon will open a panel for CROPPING and ADDING DESCRIPTION option will prompt. On this panel the image has a cropping guide points which you can drag to crop the image. Clicking on the description link allows you add description for the image which may help in optimizing search for your content. Once changes have been done press the SAVE CHANGES button to save.