What is the best courses to take in college for a major in criminal justice

The school will give you a list of classes to take, as well as another list from which to choose your electives.
You will likely have an Intro course, to introduce you to the field of CRJ, and the structure of the criminal justice system.
Probably a course on Deviance (why people do bad things).
And several others as well. You may get to choose an area to specialize in, such as Corrections, Law Enforcement, Administration.

You should start looking at some of the colleges websites, and seeing how the programs are structured.

Best of luck!
Kim