How do I post an ad?? Im new to this and so confused how to use this site

(Directly above your post, as of now) he third link in there is the provider ad posting guidelines. Read it well, then post your ad. Their rules are kind of strict but not very difficult to follow.  
Here's a very basic summery of the ad posting rules:

You can post one ad every 7 days on your home regional ad board. You can post replies to your own ad within the 7 day period but can not start a new ad thread.
You can also post an ad on other regional ad boards if you are touring that city, but you must have the tour dates in the subject line. (Same 7 day rule)
Your ad must have a link to another internet presense such as an ad on an ad mall (like EROS) or a profile on a verification site (like p411) or a link to your personal website if you have one. However if you use a personal website link the website must also have a link back to TER.  
That's it in a nutshell but do check out the actual link with the rules.  

I would recommend that you read everything in that "TER Instruction Manual" also known as the Self Help Center. There is a lot of good info in there. If you still have issues or are still confused, come back and ask here.  
Good luck

Thank u so much. Your response and the other responses are very helpful!  How do I get a website?  Do I have to have one to post? Where do I go to make one?   I'm super new to this sorry for the questions.

Thank you so much! This really does help

questions about, you should find several posts on the topic. Most topics repeat every 5-7 days. Websites and photos are especially important as you need to market yourself correctly to attract the type of gentleman you are interested in spending time with.  

If your search comes up empty, then ask the question here and one of us will attempt to give you a good answer. Keep in mind, some posters are more accurate in their responses than others.

Good luck to you.

Okay thank you!