If w3m is not installed by default then install w3m using the following command in terminal.

sudo apt-get install w3m

Now to access a web page in command line(terminal in linux)

open the terminal and type :

w3m <website name>
w3m <file name path>
Example: w3m www.google.co.in
w3m /home/test.html

For more information and option to use with w3m command,refer:

linuxservertutorials.blogspot.com/2009/02/ubuntu-server-default-web-browser-is.html
linux.die.net/man/1/w3m
w3m.sourceforge.net/
joysofprogramming.com/install-w3m-ubuntu/