How to get into a good university when you have a c-average?

Before you answer, let me please explain myself further. I started college thinking that no matter how bad you do, you can just retake the class and there would be no harm.
I was so wrong! Ya think?!!
I started my first semester at a community college and had so much on my mind at that time that I got 2 C’s and a Fail.
And this semester I got 2 A’s and 2 C’s. College is really hard, coming out of highschool.
What can I do to get into a good university? I only completed 21 units so I will need at least another 39. Can I make it up? Or is there no way I will ever get to go to UCLA or something like that. I live in Los Angeles so I would prefer people from here to answer so it would be accurate for me.
Thanks! If you’re not from LA, please say so.
=]