Ask HN: How do I know what job to apply to?

I recently started teaching myself web design, from the back end to front end.

I've developed what I would consider a pretty serious web app, utilizing an idea not seen on the web (a modified, more robust, and manageable tagging system). Unfortunately, its not quite done yet, and there are still some quirks, otherwise i'd share it.

In it, I utilize the following techniques:

HTML/5 CSS3 MVC (page built in codeigniter) PHP/mySQL ^used to build a fully working message board. full AJAX (No page loads - mimics usatoday.com, using pushstates for compliance with seo/browser favs.history). with AJAX comes jquery and general javascript usage. etc.

My question is with the general knowledge demonstrated in my web app, what type of jobs would I be looking for, and whats the best way to demonstrate said experience/knowledge without having programming experience from previous jobs?

In terms of 'what type of jobs' im not talking solely about entry level -> senior, but career paths as well (php dev, ui designer, front end, etc).

Since I am so new to the field, any answers or suggestions would be greatly appreciated!