Start by using the Add Media button in the New Post dialog to upload a photo to your Media Library (also available through the Media menu on the left hand side of the Dashboard).
Once you’ve uploaded and inserted your photo you can edit it by using the photo editor in the top left corner of the photo. Just click on the photo and the Edit and Delete icons should appear.
Click on the Edit icon (the landscape photo) to change the attributes of your media file. You can change the position, the size, the title, the caption, the frames, the permalink and much more, here. Just take you time to look around and see each of the variations you can make. There’s even an Original Image button incase you really make a mistake with your changes.
Here is the Edit Image tab. The tab I’m working on is highlighted in RED.
And here is the screenshot of the Advanced Settings tab:
Anything you need to do to an inserted image is on these tabs.