Your problem sets must be turned in as LaTeX documents. LaTeX is a powerful and (relatively) straightforward way to typeset mathematical documents. Basic LaTeX proficiency is a highly useful skill, and using LaTeX in this course ensures that your problem sets will be easily readable and look great (which makes the TA happy, which is good for you).
Don't worry if you've never used LaTeX before (but do allocate a bit of extra time for the first problem set); by the second or third problem set you'll feel right at home. You can click here for a bare-bones introduction with a template file that you can modify (there are also many good introductions that you can find on the web).
All problem sets should be submitted to the TA in person at the start of class. If you cannot submit a hard copy or are using late days, you may email a .ps or .pdf file to the TA. The time of your latest email will be taken as the time when you turned in the problem set.
Note: If you are not using any late days on a problem set, please bring a printout of your homework to class and give it to the TA.