GOROOTGoGo 1.0GOROOTWindowsGOROOTC:\Go
GOROOT=C:\Go\
*nixGo/usr/local//usr/local/go/binPATH
export PATH=$PATH:/usr/local/go/bin  
GoWindowsC:\Go*nix/usr/local/goGOROOT*nix
export GOROOT=$HOME/go
GOPATHGosrcpkgbinGogo getGo$GOPATH/binPATH
export PATH=$PATH:$GOPATH/bin  

参考资料:

1. Easy Go Programming Setup for Windows;
2. You don’t need to set GOROOT, really;
3. How to Write Go Code;
4. Go Getting Started。