Go to the list of players, click on their name, copy the url, and make it a url bbcode i think thats what you do anyways
Very easy. Go to forums, select the topic section you want to post to, then click on the "new post" button. Et voilà! You can't post a new thread from the active topics selection, that might be what you're trying to.
You're most welcome. By the way(@Tigerteen), it's the exact same process for PC except you can skip the whole bitly/link shortening thing, as PC can post ampersands just fine.