Hello there :] Well if you're meaning the title below your username that currenty says "novice", that's sort of a default title. From what I've noticed it changes as you progress with the site. (I think!)
To change it though to something else, which many choose to do, all you have to do is hover over the tab that reads "My YWS" and click on "edit profile" beneath the list of options. Once you're under that, you'll see near the bottom of the list of settings (by your birthday) an option that reads "custom title". To change it just simply type in whatever you like and it'll show up beneath your username in place of "novice".
I hope this answers your question, but if you're a little confused by my answer feel free to say so. I can try explaining in a better way, but that's basically all you have to do. Easy peasy!
