Btw, it's better to bring already a 2x2 ID picture (red background). Sign the ID application slip and submit it to the Registrar's Office. Beside it, there's another Window where you can claim your Instructional Materials containing the syllabus, grading system, etc. for the subjects you'll be taking. Just present your OR.
Extra tip: If the library is still open, you can already buy a photocopy of the textbook required for your subject. That's if you're fine reading photox. For ApMath, I bought the book (bound already) and it cost me P700.