Q: How do I go about my research?

You seem to have left your topic incomplete. Did you mean "Gender issue and quest for power in Modern African literature?" The first stage of research involves choosing the right research question, and this is something most researchers struggle with. In your case you already seem to have started off in the right direction.

As far as how you can make a meaningful contribution to existing research on the topic is concerned, the answer lies in two words – hard work! First of all you need to be sure that the topic you have chosen is meaningful to you and that you find it interesting. This will help you stay motivated throughout your research.

Next, start reading. Go back to all the relevant works on the same topic and read them to improve your understanding as well as identify any gaps that you can fill. This will also help you identify works that you can base your research on as well as make sure that you are making an original contribution. As you are reading previous published research, try to form a larger view of existing research on the topic. Take notes of your thoughts as you go. This will help you make sure you don’t forget any important observations during your research. Then, consider consulting your supervisor, professor or a senior colleague on the best way to approach research on the topic you have chosen.

Most importantly, ensure throughout the process of conducting research and publishing your paper that you follow all the ethical guidelines, such as avoiding plagiarism, ensuring there are no conflicts of interest, not indulging in duplicate submission, etc. 

I suggest you browse through the Editage Insights website for resources on various useful topics related to conducting research and publishing a paper.