After October 1, begin your Free Application for Federal Student Aid (FAFSA) at fafsa.gov or your Dream Act Application. Pay attention to the earliest financial aid deadline of the school you are applying to.
Visit the Cal Grant website to make sure your gpa was uploaded (after submitting the FAFSA).
Apply to the college of your choice. Pay close attention to deadlines on your application.
Ask your counselor and teachers to submit required documents well before your application deadline(e.g., transcript, letters of recommendation, etc.).
Check your email and/or your college portal(s) regularly, follow up with anything they request of you.