You can not create a profile for yourself.  If a client writes a review for you, he will create the profile.  You will most likely have to supply him with some of the details.

Yes, you can post one ad per week on your regional board for free.  But there are other rules and you should read the posting guidelines.  

I would also suggest paying for VIP so you can read and search freely.  It will help you get acquainted with the site.