at most community colleges, they won't have TA's teach you because they dont' have the money to pay TA's.. but anyhow.. what i did was this:
phone in my registration.. if it was full, be put on a wait list
if you're on a waitlist, go to class at a regular time.. don't have to be early..
if you're not on a waitlist (especially for english classes) go early, and make sure you're one of the first people that are trying to add the course.. sometimes teachers will tell you that they probably can't let you in, but they're just trying to scare you away
what i would suggest you do is look for another section.. for english, there's always a whole bunch of sections because they know how popular they are.. if none of those fit in yoru schedule, then yes.. you are $hit out of luck