Hi @Anonymous,
Hope you are well! 
THIS ARTICLE will show you how to install additional Revit Content Libraries when you missed a couple during installation. THIS ARTICLE is also useful.
Also, if you're struggling, you can send me a Private Message with your email address and then I can share the default Metric or Imperial families with you. I have a Dropbox Folder with Revit 2016 Content Libraries ready...
But the article will help and the method works.
The default location for OOTB (out of the box) Revit Content Libraries:
To locate your ProgramData Folder, click on your Windows Start Button, then type in %programdata% and hit "Enter", this will then open that folder as a starting point, then you can follow the default locations below.

Revit 2016 : C:\ProgramData\Autodesk\RVT 2016\Libraries\US Imperial\Doors (Choose between US Imperial or US Metric or any package as shown below )
Revit 2017 : C:\ProgramData\Autodesk\RVT 2017\Libraries\US Imperial\Doors (Choose between US Imperial or US Metric or any package as shown below )

Also, prior to installing content libraries, to avoid possible errors, I generally go and delete everything in my TEMP folder: Windows Start Button >> Search: %temp% and hit "Enter" >> Select Everything and Delete it. Some files might not be able to delete, but that is ok.
If you're looking for additional Families, you can use BIMobject or RevitCity.
I hope this helps! 
Rudi Roux
MSc | Digital Engineering Manager
LinkedIn
Revit Mechanical & Electrical Systems 2018 Certified Professional | Revit MEP & Architecture 2015 Certified Professional
AutoCAD 2015 Certified Professional | Autodesk Building Performance Analysis (BPA) Certificate
If this post resolved your issue, kindly Accept as the Solution below. Kudos are always welcome ⇘