How To Active Hover? Where I have to Change?

Hello friends, How are you all?

Here is my website: http://www.opengiga.com

Firstly, You should this site’s CSS function: http://www.gigaom.com

Secondly, Here you see the post title’s hover color and text color. When you mouse over on the “Post Tile” link then hold on red color $ text hold on White color. How I can make it or enable it for my opengiga.com site? Where I have to edit?

Thirdly, On http://www.gigaom.com this site’s active links also do the same work (under post articles). When you mouse over on the active link it’s hold on red color and text hold on White color. How I can make it or enable it for my opengiga.com site? Where I have to edit?

I have no idea about CSS. But, if anybody tell me or guide me, where I have to go and which code should be changed, I can do it.

Hope your understand? If any problem to understand please tell me…

Waiting for the right solution………

Thanks