I rarely use windows these days, but when I do, I always visit ninite.com when setting a new windows installation to install several common apps in a single go. Very handy.
The Internet Archive ( archive.org ) is extremely useful, not just for its Wayback Machine which allows you to see historical copies of a huge chunk of the internet (very useful when the web page you attempt to visit is no longer exist), but it also host a large collection of old media and softwares. Need to install an old copy of Windows XP to run an old software? You can find Windows XP installer there. Need to borrow digital book? They even have a huge digital book library there. If you find the service useful, please donate them some money if you can because the Internet Archive is extremely important to the modern internet and could use all the money it can get.