There are several online platforms where you can learn about Nigeria, but I will mention some:—
Coursera: Coursera offers courses on various aspects of Nigeria, from history to culture and politics.
edX: Similar to Coursera, edX provides courses on Nigerian topics, often in partnership with universities.
YouTube: You can find a wealth of information on Nigeria by searching for documentaries, travel vlogs, and educational channels about the country.
Wikipedia: Wikipedia is a great starting point for basic information on Nigeria's history, culture, and geography.
Nigerian news websites: Websites like Punch, The Guardian Nigeria, and Vanguard provide insights into current events and issues in Nigeria.
Online libraries: Explore resources from digital libraries like JSTOR or Google Scholar for academic articles and papers on Nigeria.
Social media: Follow Nigerians on platforms like Twitter and Instagram to gain insights into contemporary Nigerian culture and daily life.
Blogs and forums: There are many blogs and online forums where Nigerians share their experiences and insights about their country.
Remember to critically evaluate the information you find and cross-reference it with multiple sources for a more comprehensive understanding of Nigeria.
Also you can do it the old fashion way, by visiting or taking a tour to the beautiful country Nigeria. You will be happy you did.