Adding photos is harder for some of us than others -- a lot depends on how you are doing it, that is via a phone or desktop or what. There are various help options in the Help subforum. It took me about a year of off and on trying and frustration, some people figure it out quickly and some people just give up!
This recent discussion has quite a bit of suggestions:
Help posting
My main issue is that I use an old school digital camera and I have to reduce the file sizes (which I outlined in the thread above). There is some phone help in this one:
Mobile Users ... Please Help Each Other Using This Thread