In general follow Effective Go.
Most of the interactions we do with Google Cloud is via the REST APIs, and the Go API bindings at google-api-go-client. In addition, where a stable API is available, we use the google-cloud-go APIs. The latter is more idiomatic Go and is the recommended options where available. We should consider migrating as more APIs are made available in google-cloud-go.
Currently we use dep to manage dependencies. The build scripts should invoke dep if it already exists. If not, dependencies may be installed in your GOPATH.
See https://github.com/golang/dep for details on dependency management using dep.
