There is so much information and websites out there to research your niche.
Google Trends is good to check how your niche is trending and in which Countries, States and cities.
Pinterest is perfect for visual inspiration and finding ideas.
Quora is a place to find out the hot topics in your niche.
AnswerThePublic is as the name suggests is finding out what people are asking on the internet and can be filtered by country and language.
Facebook groups just like Quora is a great way to see what is the hot topic within your niche.