Everybody can search for literature. However, those who take a little bit of time and think about how they want to proceed before starting their actual search will be more efficient and find more appropriate material than those who start immediately and hope for the best
Literature research isn’t a linear process. Instead, it moves in circles, with it being normal to have to adjust or further specify your search terms or research question. This is because the more you discover during your search, the deeper you can delve into your topic.