Reading up on Google
Google has a lot of products. It is impossible to keep track of all the products. But you should keep up with their most used products.
And you can earn an edge over the competition if you know more about current and existing products.
I also highly recommend getting up to speed with their origin story, particularly if you are young and have only known a world where Google was the norm.
The following is a list of resources to learn more about Google. There are many more, but I find these particularly helpful. If you know of better, ping me.
Google Origin Story - How Google Works (a book)
Wiki on of Google Products - Robust List
The Google Cemetary - Products that have been deprecated (turned off).