This about open and closed questions and how google search tips are helpful and it also explains a few

We should you use both closed and open questions closed because closed questions are quick and easy to answer with not much depth but still can work. Open questions work for if you need a in depth and meaningful answer.that's why you should use open and closed questions not just one of them.

We should you use Google Search tips because they are very helpful and useful. One of the way it could be helpful is if you need to find a file you can use filetype and it helps find certain file. Also if you want to find a search and say you are doing a project on human effects on the ecosystems in the water and it keeps coming up acid rain in the search and you don't want that put a space in the back of you search and the put a space and then a minus and then put acid rain and it will get rid of acid rain.