Was hoping someone could help me figure out how and where I can post an ad as a provider

Right above.  Use the drop down window.  If you don't see a city/state your located use  "other"
Make sure to check the rules for advertising, located in the "self help center" back on the main page of this board.  Good luck

Hi you might want to contact the mod of your local aka regional board and ask how you might get your ad to go up when you post it .Otherwise it will have to be reviewed by the mod prior to being posted and on a weekend in some areas you may have to wait a bit. So send on over a Private Message to the mod of your area and introduce yourself kindly .I would ask if you need to be unmoderated to have your ads go up when you post hem as opposed to when he has time to go through the moderated posts and allow them to go up.
If somehow you can not be allowed as you are new to have them go up quickly then you might consider the timing on it.In other words do not make an ad that says I am available today only in area xyz and in the meantime the post maybe gets up tomorrow ..That being too late for your ad.Also keep in mind when writting your ad that you are new and no one knows you so one of the things i notice often with new girls is they post an ad and go out or something rather than revisiting the ad at some point in the day to see if perhaps someone has a question for you .If and when the questions go unanswered it is not a great thing .Unaswered questions for guys is not something that will motivate them to TOFYT.Answering their concerns is I believe an important step in building a relationship with the board viewers. Also include a pic of yourself and a link to your site or ad page.What I mean by that is a pic of YOURSELF under no circumstances should you or anyone else use a pic that is not them it will in fact ruin you as a TER provider in most cases you may as well just go home .And if you think you might get away with it be sure you wont for long.We have and use all the time sites like tineye to locate stolen pics and it takes all of 28 seconds to verify as in less than 1/2 of a minute literally.Good luck to you ,Lianna