Answer:
You have to look at 3 different things
Explanation:
So first you look into the source by doing research on that certain subject, like if its a person, you start out where he lived, and if its a place you study the bacground of that place i.e, you have to look at what time that place was established or not, and if its a thing you do the same thing you did when its a place.
Secondly, You find the facts of that person, place, or thing by looking deeper into it like where was he/she born if its a person, or when it was built if its a place, and same goes if it was a thing. You have to look things up online and NEVER use wikipidia or any wikis, and then do the rest of the research yourself, try looking into books, like at a library and then try going to that place, but if that place is a place u cant go try looking deeper into it by finding sources like online and in books more. If its a person, you sould try looking into a biography of that person, then you look deeper into that search by looking online and going to the library.
And lastly, stay on topic of that resource and don't leave that subject until finished, and if you start the topic, you have to stay on it until finished. Investigate more on the other topics related to that topic after you have finished that topic, then you move on to the related topics to add detail to that topic, and you ALWAYS have to be willing to learn more about that topic. That's all I have on that subject.