Michael Schoch, Answers questions on Noodle
Since you have a social security number and green card it looks like you qualify for federal financial aid.
Santa Ana College offers a few financial aid packages for its students. You can read about the grants and work-studies available on the financial aid page. The school also offers several scholarships for students who meet eligibility requirements.
If you or someone in your family ends up not receiving a green card, you may want to look into California's Dream Act which allows residents who do not have citizenship to attend a college for in-state tuition.
If you have specific questions and concerns, I recommend calling the school's financial aid office at (714) 564-6242, or emailing it at Financial_Aid@sac.edu.
I hope this helps you explore your options. Best of luck!