Help please

Hi to all,
I am in difficulties.
I don't know how to post a posting on the forum.
The link I get on my email stating I have a message does not tell me from whom it is.
Most times the link does not work, even when I press Ctrl and then click, resulting in a message to say that the server cannot be found.
When I go on this site, I cannot find where to reply to those I know who they are - is it on my page, on their page or on the forum.
So, Help Help Help.
My email address - renate555@gmail.com
Thanks