You probably know that websites keep track of how you're using them, and even the sites that don't require you to sign up with an account can keep a track of your preferences and behaviour using cookies. But the biggest networks, like Google, and Facebook, keep tracking you even when you're not signed in and follow you around the Internet to serve you with "relevant" advertising and content. And since most of us will have signed up for at least one of Google's many popular services, that's the company that has the most information. Not everyone is comfortable with the idea of one company knowing so much about them. If you're one of these people, read on to find out how to minimise Google's tracking online.

(Also see: How to Delete Gmail, Facebook, Twitter, Google+, YouTube, or LinkedIn Account)

Please note that this is not a guide for blocking advertisements. You will still get served advertising - it just won't be personalised by tracking your online behaviour across the web. Here's what you need to do:

Disable Tracking

This is the most important part of this guide. If you've noticed the same ads following you no matter which website you visit, it may be because Google is tracking you. Thankfully, Google makes it very easy to disable tracking. Go through these steps to protect your privacy.

1) Google has a page for advertisement settings. Visit it and sign in.

2) Here you will see two columns, one for advertisements you'll see on Google's websites and one for the advertisements you'll be shown on the Web. Based on your data, Google will have estimated your gender, age, languages you speak and your interests. Scroll down to Opt-out settings and click Opt-out in both columns. You'll notice that the data above will be replaced by N/A.

3) Google's advertising cookie is still tracking you. To remove it, head to the Advertising cookie opt-out page and click Download the cookie opt-out plugin. This plugin is available for Chrome, Internet Explorer and Firefox. After downloading this plugin, Google will stop tracking your browsing activity.

Disable Search History

While that stops the direct tracking, Google is still gathering a lot of information about your behaviour. Whether you're using Gmail, or YouTube or Google itself to search for things, you're giving the company a clear trail of browsing data. The good news is that you can stop it from doing so easily. This is how:

1) Head to Google's account history page and sign in.

2) You will see four large cards (Things that you search for, Places you've been, Your YouTube searches, and Things that you've watched on YouTube). Each one of these will have a Pause button near the bottom-right and a Manage history link on the bottom-left.

3) Click Pause on all four tiles. This will stop Google from recording your personal data.

4) To remove the data that Google has already recorded, for each tile, click the Manage history link, then select the items, and click on "Remove items" to delete it all.

Disable Shared Endorsements

Last year, Google unveiled a new way to make advertisements more appealing - showing your Google+ activity next to advertisements. Here's what Google says about this, "To help your friends and others find cool stuff online, your activity (such as reviews, +1's, follows, shares, etc.) may be used along with your name and photo in commercial or other promotional contexts." If you'd rather not endorse products or services in advertisements posted on the Web, follow these steps.

1) Go to Google's shared endorsements settings page and sign in.

2) Now scroll down to the bottom and remove the uncheck the box that reads, "Based on my activity, Google may show my name and profile photo in shared endorsements that appear in ads."

3) Once you've removed the tick-mark, click the blue Save button. That's it.

For Android, iOS Users

If a smartphone or tablet is your preferred device for browsing the Web, you can take a quick peek in its settings to disable tracking. On Android, head to Settings > Accounts & Sync > Google > Ads (on some devices, Google may appear in the Settings app itself). Now make sure that there is a check-mark next to Opt out of interest-based ads. On iOS, go to Settings > Privacy > Advertising and turn on Limit Ad Tracking. This will stop websites that serve advertisements from tracking your browsing activity.

Switch from Google

Still worried about your browsing history being tracked to deliver search results on the Web? Try DuckDuckGo, a search engine that respects your privacy. It doesn't tailor search results based on your interests or the websites you frequent. DuckDuckGo recently added several new features such as instant answers. Apple's iOS 8 supports DuckDuckGo and users will be able set it as the default search engine on their iOS devices.

These steps should have helped you keep Google from tracking your Web activity. If you have any other suggestions, reach out using the comments section below. If you like this article, you might want to visit our How to section for more such useful articles