Set up an account on a web image service like Photobucket, Flickr, etc. Upload your images there. The image server will give you a Direct URL for each image. Copy the Direct URL (Ctrl+v)
Come back here to RC and in the Editor you will see a yellow mountain icon. Click on the icon and an input box for the Direct URL comes up. Paste your URL there. (Ctrl+v)
You can post a line of descriptive text above or below each image in the RC Editor. Leave a line space between multiple images. It makes it easier to view them that way.
Using an outside image server has a couple of advantages: firstly it serves up images faster than RC does, and secondly, your images will be viewable to anyone whether they are logged in or not, whereas images hosted by RC are only viewable to those who are logged in.
Dave.M