What google knows about you.
Have you ever wondered why ads on youtube relate to your interests ? Google uses many services like Gmail, google drive and youtube to keep learning about you. This information includes your name , phone number , location ,and so on.
If you want to find out what Google can see about you , need to visit a hard-to-find page called “ Web & App activity” click the link here “ https://history.google.com/history/”

This shows up all the links of web you searched. You can delete them but it’s not that easy. You need to delete them all one day at a time. Click on today and then click the delete button at the top.

You will see that Google tries to convince you not to delete them. But don’t worry, you can delete the information with out losing your Google account.

After that, click the button on the top left of the screen. You will see there’re more ways to keep tracking you.

Here’s to more Google ways to keep on you. You can go to those pages and delete stuff,too.

But you have to deal with Google’s warning on why you don’t want to delete them.

If you click on location history, you will see a timeline represents your traveling by using Google maps or other location services.

You also can delete your location data and download what Google has collected on you,too.

Click on “select all” and scroll down to click on “next” .

Select your file type and click download. These files are very huge. They may take hours or days to compile.

You will get your data and what it is tracking on you.

While you’re awaiting, you can explore advertisers that are told about you by click on “my account”

It will take you to your account-setting page. Click on “adds setting” then scroll down and click on “manage ads setting”

This is the example what google thinks user’s into. Some stuff like bikes,fitness,mobile phones and so on. But some stuff is not , such as magic, asian music.
Credit : http://www.techinsider.io/everything-google-knows-about-you-2016-5?op=1
Ps. I wrote this blog on my phone.