Some of my friends have a Gmail address, sometimes only that and sometimes in addition to other email addresses. (One friend told me about having 17 email addresses.)
I try to write about things that matter to me, are useful to me and might be to others. Here, I intend to mention Google services and focus on Pocket and Kindle another day.
If you have a Gmail address, you have free and easy access to the 271 Google apps and services. I read recently that Google search is the most popular site on the internet. If you have a Gmail address, the name and password you use for that will open any other Google program. You can give yourself a Gmail login and password easily. The other major computing/tech companies, such as Apple and Amazon, may put the squeeze on Google, or on users, or both, to try to get less attention on Google products and services and more on their own.
There is more than one way to get a look at the Google services but my favorite is to look for a small 3x3 set of dots in the upper right corner of the Inbox of Gmail.
https://fearfunandfiloz.blogspot.com/2018/04/nine-dots-in-3-by-3-pattern.html
Another way is to search Google for "Google products and services".
If you know the name of a service, say Google Drive, a place to put your documents 'in the cloud' instead of on your computer, you can get to that service using the format servicename.google.com in the address window of a browser like Edge, Firefox or Chrome.
I haven't tried to check but if it were me, I would offer a master's degree in the 271 Google products and services and what they do. There may already be something like that. I wouldn't be surprised.
I should mention that some of my wiley friends stay away from Google stuff on the grounds that Google will sell their data. I am very far from an expert in computer security, dirty tricks and cleaner tricks and scams but I have enjoyed my use of Google email, blog, web site(s), photo editing and storage for more than 10 years with very little trouble. I try to avoid putting sensitive or valuable information anywhere on the internet.