Looking for advice on posting pics

[NightShadeFairy]

Hi there, I am wondering if anyone else uses the Tap-a-talk app on their iPhone? I am trying to post pics, and I was able to post a bunch on a previous thread, but I had put in in the wrong section as I didn't know yet that there was a tank Journal section. I don't know how to delete that old thread (titled I'm new here, and advise?)
And when I try to post pics on my new thread about my tank Journal, it says I have exceeded my picture limit.
Does anyone have advice on how I proceed? I am not so great with the whole computer thing, any advise is appreciated