A Tour of Go is an introduction to the Go programming language. (Official) + A bunch of Grab Go Challenges (Grab)

1. go get github.com/myteksi/tour
2. cd $GOPATH/src/github.com/myteksi/tour/gotour
3. go install

1. ./$GOPATH/bin/gotour
2. to restart the challenges without cache: ./$GOPATH/bin/gotour -http=127.0.0.1:xxxx (change xxxx to a different port than 3999)