www.ads-software.com like website

Hi All,

I’m new to wordpress & to this community.I’m playing with wp for three days & I’ve got some doubts to ask.

Consider the default www.ads-software.com website menus.

It has the following menus. Home | About | Extend

when I click Home, Home page is shown. When I click about,
the about menu item is highlighted, and a new block at the left appears with intro menu item highlighted. when I click
features(menu item on the left) it is highlighted & its main category (about) is also highlighted. similarly for other menus in the left. How can i achieve this effect with wp?. can any one tell me how can be this done? or any relevant topics regarding this?

Thank you