How to know which class to choose???

<p>Hi everyone, I'm an International student and I'll be at UW this Fall.
I keep seeing everyone talking about their classes, posting pics of thier schedule with names such as Engl XXX A/B/C/... or Math XXX A/B/C/...
The thing is I don't know any of that means with all the numbers and letters; what's the difference between them?
My online A&O session is in 4 days and I have no idea what to register for...Is there anybody there who will help you with this thing?? Are there any information online?</p>

<p>You can start by browsing the Time Schedule: <a href=“University of Washington Time Schedule”>http://www.washington.edu/students/timeschd/AUT2014&lt;/a&gt;, which shows classes that are offered this coming Autumn Quarter in each department.</p>

<p>From the Time Schedule, you can click on a course name to see the Course Catalog for that department, <a href=“MATHEMATICS”>http://www.washington.edu/students/crscat/math.html&lt;/a&gt;, which shows course descriptions.</p>

<p>You can also browse the UW Advising pages with info on how to choose courses and what majors are offered at UW: <a href=“http://www.washington.edu/uaa/advising/choosing-courses/overview/”>http://www.washington.edu/uaa/advising/choosing-courses/overview/&lt;/a&gt;, <a href=“http://www.washington.edu/uaa/advising/majors-and-minors/list-of-undergraduate-majors/”>http://www.washington.edu/uaa/advising/majors-and-minors/list-of-undergraduate-majors/&lt;/a&gt;.&lt;/p&gt;