how to import many csv files and extract all specific columns ?

I have a set of csv files which I would like to import all. I have set my directory to the folder that csv files are there, however, i don't know how to import them all. I have checked other questions but none worked. Any solution will be appreciated

[Stephen23]

This has been covered in lots of threads. Here are very thorough explanations:

http://www.mathworks.com/matlabcentral/answers/57446-faq-how-can-i-process-a-sequence-of-files

http://matlab.wikia.com/wiki/FAQ#How_can_I_process_a_sequence_of_files.3F