A couple things came to my attention that you may want to look into if you're running Win10.
Windows 10 is using your own bandwidth to deliver updates to others
Windows 10 ad tracking
Both sites explain how to disable those things, so if you just went with an express install then you may want to take a look at your settings.
Thanks, dude!
I'll look into those "features" and let you know how easy it is to get rid of them.
UPDATE:
The Windows Update "torrent style" kinda makes sense though it sucks that's it's enabled by default. It should be an opt-in feature.
I know this wasn't mentioned but I recommend also disabling WiFi Sense. Google that to see the potential horror that could be
With regards to personalized ads, I've been toying around with that concept for a while with Google's personalized ads system.
Admittedly, ads suck. However, the reality is I'm going to have to have to see ads, so if I'm going to have to deal with them on a daily basis I'd rather they were relevant ads.
To put things in context, if you live in the US or Canada, when you bring up YouTube (or any online news hub for that matter), without being signed in you'll come across information that's relevant to the region. Chances are it will also be English material.
Now, I live in the United Arab Emirates. Despite it being an Arab nation where the official languages are Arabic and English, if I hop on YouTube without signing into my account, the main page will be flooded with South Indian (Malayalam and Urdu) content, followed by Filipino content, then some Arabic content, and finally English content. The obvious reason being that a fair chunk of the population in the country are expatriates, predominantly labourers from India, Pakistan, Nepal, and the Philippines.
This is a reflection of the reality of the populace in the region. Unfortunately, it gets in the way of the relevance of the internet to me. I'm not interested in watching a Bengali music video, the hottest Bollywood trends, or the latest news in Manila. Even though I was originally against the idea, the only viable solution is to sign in and have a personalized view of the internet.
Of course, opting in to an ad scheme also opens you up to monitoring and targeted advertising. What really gets done with the information they get off me I'll never know, but hey it gets the news I want and the news I would want on the screen.