Other than Fodors and Lonely Planet type guides, which usually cover places where tourists WANT to go and relegate the rest to 1 or 2 pages of vagueness, your're really going to have to decide on a place like Nigeria based on input from others. That is why I warned you about heeding advice from people who really haven't experienced living/working in Nigeria.
It's difficult to travel to Nigeria unless you're coming for business purposes. In order to visit, you'll need a visa that must be obtained prior to arrival. Obtaining that visa requires and invitation letter from a Nigerian company which states the purpose of your visit and accepts financial responsibility for your stay. There is virtually ZERO tourism in Nigeria. If you got a job, they company would help you obtain a visa through G3, Washington Express or any number of visa agencies in Washington DC.
PM if you want to know specifics about Nigeria, flying in country, living conditions etc.