Perhaps you should read the book rich dad poor dad
My best guess for this question is to find good topic to talk about, and if your topic is too broad it may be hard to find information. So if your topic is too broad you have to do a lot of research, and find information that you thought made sense.
1.) who
2.) why
3.) whose
4.) what, how
5.) that
6.) why
7.) whether
8.) when
9.) what
I hope you can use words over again in this case. Let me know if you need explanations!