There are 3 ways of seeing new posts on ATP:
1) scroll down until you see what's newly posted
2) click on the "First Unread" link at the top right of every post
3) Use your site preferences to automatically skip to the new post on each thread that you view. This method is the fastest way to view all of your posts, and is very easy to set up. Click on the "your profile" link at the very top of any page. Click on your "site preferences". The sixth option is "Automatically jump to the first unread post in threads?" with a yes/no option. The default option is "no". Changing it to "yes" will automatically skip you to new posts in both the forums and tree-mail. Don't forget to click on the "save your changes" button at the bottom of your page!