Hi KaitaBlue and Rose and welcome to the Project Meditation Community.
Kaita, some simple guidance to using forums for you...
The community is made up of several forums (sometimes called sub-forums where the community itself is called the forum) and each forum relates to different areas e.g. a forum for people to introduce themselves, a forum to discuss meditation, a forum to discuss Eckhart Tolle's principles of the Power of Now etc.
Each conversation in a forum is referred to as a "thread" and these are made up of individual "posts". If you want to start a new conversation or ask a question, find yourself the most suitable forum and click on the "New Thread" button. If you want to contribute to an existing conversation then, as you've already done, use the "New Reply" button or one of the buttons against another persons post if you want to e.g. quote what they've said and respond specifically to that.
Looking forward to seeing you around on this ever growing community.