+1 for NickAu1 above!
Those options has been a given for me since getting started on Firefox in 2009. Reason that I didn't even think of mentioning them is because of Firefox Sync, like Google Chrome sync, will import preferences over from one computer or OS to any other. NoScript is the best security addon that any browser has, and AdBlock Plus fine works with Firefox, Chrome & Opera.
Due to Adblock Plus capabilities, the content that you want to see loads faster, as w/out it, all content is fighting to load on the page at the same time. And on capped or metered connections (some are limited to as little as 5GB or less per month), those unwanted ads counts as data bandwidth. Often consuming more than what the user was looking for to begin with.
WOT is also good & works with the same browsers mentioned above. This lets users know about the ratings of sites, possibly saving their hard earned money sent to criminals on bad sites. I'm not only a WOT user, but a member also & always take the time to rate bad or questionable sites. Some are hard to spot & others are dead giveaways. Too many misspelled words on a site advertising for goods, along with too good to be true prices (especially software), as well as excessive references to being a "gold" Microsoft partner are all dead giveaways. Legit versions of XP Pro & Windows 7 Pro costs far more than $59.
VirtualBox is great free software to run VM's in if needed. One can always "try" Windows 7 for 30 days w/out activation, and 8.1 Enterprise for up to 90 days. A Microsoft Account, such as Hotmail/Outlook is required for 8.1 Enterprise Trial versions.
Ubuntu is really a great "drop in" replacement for Windows, it just takes a new way to get used to things. Like changing jobs, Just because it appears more technical (actually it is), there has to be a compromise between user friendliness & security. Ubuntu & any distros based from it, has superior inbuilt security, not too hard for new & experienced Linux users & best of all, no more MS taxes to pay. And the more you use it, the friendler it'll become. After learning the basics, you'll discover the at first glance intimidating terminal as your best friend. The terminal is the power to get things done, having total control over your computer. This takes time & after 5 years I'm still learning, but again that's the same with life in general.
So if you're in the market for a new computer & cannot afford the highly jacked up pricing for some Ubuntu vendors, grab a Windows computer with the hardware that meets your needs, create the recovery media & store that in a safe place. Finally backup the contents of the drive using any freely avaiable backup software (do both in the event you wish to sell/give away the computer). Then install Ubuntu & your favorite software, The 32 bit version has over 30,000 choices & the 64 bit over 50,000. Mostly free.
The good thing is, most all computers are now 64 bit & most has 4GB or more of RAM (many 6-8GB w/capacities of up to 32GB), Most any new computer can handle 64 bit Ubuntu fairly well.
We assist Ununtu users here, there is also a massive Ubuntu forum where the answer to most any question can be found. Many users who converts to Linux, regardless of distro, after gaining sufficient experience, in turn helps others, keeping the family growing & thriving, giving "newbies" priority where needed. We turn no one away, as long as the member follows simple forum rules, similar to what we all agreed to here.
Lastly, if the truth were known, over 85% of those who runs MS Windows doesn't "need" to, they desire to because it appears easier. Yes on the surface it is, but it's also easier for crooks to get in also, stealing your personal info & financial data. With Ubuntu & other Linux distros, this threat is greatly reduced, w/out paying yearly fees for security software to protect you.
A few of the greatest things in life truly are free.