1. Install Go
2. Prepare environment
3. Get my code

You'll need to install the Golang development environment in order to run the tests.

$ brew install go

Go requires an environment variable named $GOPATH which points to your Go workspace. You can also export the Go bin directory in order to run your executables. Export $GOPATH from your .zshrc or analogous file like so:

export GOPATH=/Users/sandropadin/Project/go 
export PATH=$GOPATH/bin:$PATH # to access Go binaries

You will need to create that go directory with the following folder structure.

~/Projects/go
$ tree -L 1
.
├── bin
├── pkg
└── src

Golang can get dependencies from any repository including: Git, Mercurial and Bazaar repos. One of my Tic Tac Toe dependencies is in a Bazaar repo so you will need to install Bazaar DCVS:

$ brew install bazaar

Now you can install the rest of the dependencies:

$ go get launchpad.net/gocheck
$ go get github.com/remogatto/prettytest 

Now that you have Go installed and the environment set up, you can grab my code with the following command:

$ go get github.com/spadin/tictactoe

Running this command downloads all of my files from Github to a local directory at: $GOPATH/src/github.com/spadin/tictactoe

You'll have to run the specs for each package individually. You can do so by switching into each sub-directory and running the following:

$ go test -i # installs dependencies
$ go test

$ cd $GOPATH/src/github.com/spadin/tictactoe
$ go run tictactoe.go

$ cd $GOPATH/src/github.com/spadin/tictactoe
$ go install
$ tictactoe # assuming $GOPATH/bin is in your $PATH

The Go documentation is well written, organized and helpful.

In particular, I've found these links to be of great help:

1. Go Programming Language Specification
2. How to Write Go Code
3. Effective Go
4. Go Package Documentation