<p>Right now on the student store site the only "required" materials are the Physics 7A package. Is there any way to buy these items separately and cheaper from another source? </p>
<p>And also, what is the Portable T.A. and should I buy it?</p>
<p>You shouldn’t need anything but the standard course materials, and if you want extra problems, which is what the Portable TA might have, just check online for past midterms and finals. </p>
<p>The one problem is that the workbook they sell you in the package probably is specialized for the Berkeley course. Certainly the textbook is available for cheap. See if there’s an option to only buy the workbook from the text store or something.</p>