First find the nearest BIR. Then be sure to go before 8 AM.
You would be needing your:
Birth certificate (?)
Photocopy those documents because the BIR officer will be getting that.
After giving them the requirements, you would be asked to fill up a form.
Submit the form and wait for your name to be called.
When your name is called, approach the officer and your TIN Card will be given to you.
Easy as that! :-)
Just a disclaimer: I am not connected to any government office so I won't be able to answer any questions that you might have regarding procedures and processes on how to procure documents such as an NBI clearance, an NSO authenticated birth certificate, and etc. All the information that I have is already presented above. The information presented in this post was gathered when I transacted with the Zamboanga city (region 9) branch/office.