We are Katie Weil '14 and Tianyun Wu '13 (Helen), 2012-2013 Brandeis Undergraduate Physics Departmental Representatives (UDRs). Here are some useful links for Brandeis physics majors. Feel free to contact us via Brandeis email (tianywu at brandeis.edu or kweil at brandeis.edu) if you have any question regarding these links.
Brandeis Physics
Learning physics is more than sitting in the classroom and solving tough problem sets. At Brandeis, we attend physics seminars to get a glimpse of the cutting-edge research
, and participate in fun projects with the Physics Club to help high school kids learn physics!
Each year, we have several positions available at various Brandeis physics research labs, during both summer and regular semesters. In addition, many schools offer summer research fellowships funded by NSF (REU). 
These fellowships have early deadlines (most in February) and are often highly competitive. Therefore, please get your application materials ready as early as possible. If you are an international student and hence not eligible for REU fellowhips, consult professors for potential laboratory positions at Brandeis or other institutions.
Grad School and Physics GRE
Planning to go to grad school? Get prepared now. If you are planning to go to a physics graduate program, you are most likely required to take both the General GRE and the Physics GRE. They take a lot of time to prepare for!
By the way, you can get help on writing your personal statement and resume from Hiatt's graduate school advisor.
You can find many internship opportunities or full-time job positions at Hiatt's website. Hiatt also helps you prepare cover letters, resumes and other application materials. 

You cannot go through Brandeis physics curriculum without using Mathematica, MATLAB and LaTeX. Reading online tutorials and trying out some examples are two most common ways to get started.