Driving Inter model out of Port of Long Beach.

Can anybody tell me what I need to be able to do this. Also, what experience level do you need. I graduated from truck driving school last June, but haven't gone out training yet do to some personal issues.

I see loads of ads on CL so I figure the companies servicing the ports must be screaming for drivers. Since most of these jobs seem to pay by the load, I assume no benefits, as you are an Independent contractor.

Should I get my TWIC card before I put in my applications, and do these companies take drivers fresh out of trucking school?

And finally, what is a "working knowledge of the Port" mean.? I would think that if you have the correct addresses, dock #, and can read a map, you should be able to survive out there.

Thanks to any former and current Port of LA/LB drivers who might be able to steer me in the right direction.