With your Post up, click on the "Edit Post" link/tab at the bottom right of the post. Move the typing cursor to the bottom of the page and maybe give one or two carriage returns, then click on the icon 3rd from the right at the top of the edit block. When the "Insert Image" display comes up, click on "Computer" at the top, click on "Choose File", find the file, then click "open". This will oad it into the window to the right, then click on "Upload" and this will upload the image to the post. Repeat this for each and every picture (note: you might have to click on "Basic Uploader" if the correct screen does not come up) that you want to upload. When done, just click on the "Save" link/tab at the bottom of the edit block and you are done. The post will upload again but this time with the images.
Frank