Rita, you can add pictures side-by-side if you want, and you really can post pictures anywhere in your narrative as you go along. You just have to hit the return key before and after you upload a picture, and then it will post on the next line and your text will continue on the line after. And also, I use the "Preview" button a lot to make sure of where I am as I go along.
If you want to post side-by-side you upload both pictures, and each will be on a separate line, and then you place your cursor at the very beginning of the second one and hit the delete key once, and it will pop up to the previous line and carry over to the second line. Then hit the return key once again at the end of the second picture. And then you can check it with the "Preview" button to see how it looks. Sometimes I do three across if I have a lot.
I am so happy that you are trying it out, and I know you're not thrilled about it, but I do love your pictures!