Searching the Internet

I learned a lot from Chris Nolan’s presentation about how to make high quality search on internet which we will need to use almost everyday.
First of all, I got to know what “I’m feeling lucky” on google is for, although I have been using google for years, I have never known what is that button for. It is nice to know the function is that it takes you to a webpage which they think is what you are looking for and you can find a lot of information there.
I used to be wondering about how google sort the order of its results, since most of us would only look at the first two to three pages even though there are more than millions of results. I learned that Google sorts results by the popularity of the sites, of how many clicks are there, but not by how much they pay.
You can tell the origin of the websites by looking at the URL of it and determine whether it is trustable.
There are many things google search can do besides search for websites. It also contains definitions, maps, images, news, formulas, etc.
Something that surprised me is that google has a function called google scholar, which is a tool for searching for scholarly journals. I have never known that we can actually find scholarly or peer-viewed journals on google, so I only go to academic research complete to find those articles. Now I know that google can take us there by filtering its results and makes it much more convenient for us.