You need to click on the plus sign that says Click to add a picture. It's next to the subject line for the blog heading. It only shows up on the original post. You can't add pics in an edit after the original post is saved.
Be sure to close the picture loading window when you are done, because if it stays open in the background, at some point you'll click on Add Image and nothing will happen.
Pictures aside, in general, if you have trouble with MyBloggers, go to preferences (and wherever you find Clear History) in your browser and clear the cache and the history and restart your computer.
1. You write your post first. 2. Then you go over on the right side of that page to where it says CLICK TO ADD AN IMAGE and click. 3. Then a dialogue box/window appears. 4. Where it says BROWSE, click on the button. 5. Then you navigate to where the photo is on your computer, and click on it. 6. Then it will load the photo in that dialogue box/window. 7. Now you place your cursor on the very top line of code that shows below the photo. Then copy that code. 8. Click OFF the dialogue box and go back to your post that you are making. 9. Place the cursor in the post box where you are writing. Put it where you want the photo to appear! 10. PASTE the code there. You won't see the photo yet, just the long code. When you are finished with the post and save it then the photos will appear on your finished post.