How to select or highlight a block in Emacs?

Question

I want to select or highlight a block in emacs without using mouse but doing it from the keyboard like vim\'s visual mode. What is the easiest way to do this from a keyboard

Answer 1

See the article: "Working with rectangular selections", especially the comments section. See also the section of CUA mode documentation titled "CUA rectangle support". There's also a nice video on vimeo.