To see if you have the tools required for the sandbox examples the key is open up a command prompt and run each tool from the command line to see that it is installed and present:
This is how we do it on Mac OS X or Linux, try these three commands at the command line:
c++ --version make --version git --version
In each case you should get feedback on whether each command line tool is installed and what version it is.
For Windows, the commands are the same, except for the C++ compiler:
cl make --version git --version