Beginner's questions about WCF and web services

For the purpose of this forum let me just say that I got my certs back in Dot Net 2.0.  I know how to write simple web services.  Now someone has dumped a huge package of code on my desk that (I think) contains a WCF project (without documentation
of course).  Contains references to System.ServiceModel.
So my questions...
1.  What (if anything) is the difference between WCF and Web API?
2.  If there is a difference,  how do you decide which one to use?
 3.  Assuming that this project on my desk is a WCF project, where can I find some hints on how to run it in VS2013 Community? 

WEB API is restricted to ASP.NET and HTTP. 
http://captechconsulting.com/blog/john-nein/aspnet-web-api-vs-windows-communication-foundation-wcf
WCF uses more communication protocols than just HTTP, there are more ways to host a WCF service other than IIS, like a selfhosting exe type WCF server,   and WCF is a SOA solution.
WCF is a more robust solution in a whole lot of ways is the bottom line.
http://en.wikipedia.org/wiki/Service-oriented_architecture
http://www.codeproject.com/Articles/515253/Service-Oriented-Architecture-and-WCF

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