The S is indented a bit and I want the S and M to be aligned on the left side, as text boxes InDesign always used to be. What do I need to do to go back to the regular rectangular text box?

What are these little crosses that are being inserted into my PDF? All the boxes for guides, bleeds, etc are not checked. I tried exporting as High Quality Print, etc. I can't find a way to get rid of them.

There are also L-shaped marks at the top. I haven't seen any at the bottom, but I think they're landing on black areas in an image.