Would this be okay for books?

I'd rotate both images and possibly try and get a clearer shot of the second image(it's a bit blurry). That book looks familiar to me for some reason... 60s on the year?

By all means, rotate both photos. If you click on the image to enlarge it Windows Picture and Fax viewer is what will most likely open it. At the bottom of the window there's two green icons, rotate left and rotate right. You may get a warning about losing the quality of the photo. Don't worry about it just click yes/OK and go on it'll be fine. When taking a photo involving small print such as photo 2, use the macro setting on your camera. Clears everything right up.

If you're using the phone app for ebay, there is a rotate image option when you're uploading. I haven't used the computer based listing in a while, but it may be there too.

Media mail is nice because it is cheaper, but beware, don't put anything except BLANK paper or they will charge the recipient regular postage which will come back to you.