What programming languages you need to learn

What programming languages you need to learn.

1. Learn one procedural language, like C

http://www.tutorialspoint.com/cprogramming/


2. Learn one OO language, like C++, Java, or even Python

http://www.tutorialspoint.com/cplusplus/cpp_classes_objects.htm

http://www.tutorialspoint.com/java/


http://www.tutorialspoint.com/python/

3. Learn one functional language like LISP, Haskell

https://en.wikipedia.org/wiki/Functional_programming

http://www.tutorialspoint.com/lisp/

http://learnyouahaskell.com/chapters



4. Learn one scientific research language like Matlab

http://www.tutorialspoint.com/matlab/



Basically programming languages can be divided into the above categories.


After you learn one from one  kind, it is easier to master a new one.