Nice concept. Hopefully, you won't lose steam along the way. I would personally love a site that offers such info.
Back to business, here are the top 6 (of many) things that I noticed on the site. For more and/or help fixing the issues, you will have to pay - my company offers website auditing as a service.
1)
http://www.naijaexamsalert.com/web-training.html - layout is black, not green as the rest of the site. why?
2) Contact form, if not filled, takes me to a white page
3) when filled but not correctly, I get "thank you". Learn to validate on front and back ends
4) Is the aim of the site to promote google ads or exam alerts? All I kept seeing was the text around the white section, not the white section itself
5) Get rid of the counter. Get rid of the widget that tells me how many people are online. If all I see is "1", I might be inclined to come back

6)
http://www.naijaexamsalert.com/about.html - why is the text blue? why is the text centered? Get rid of the animation at the bottom of the page