If you're building the provider, follow the instructions to install it as a plugin. After placing it into your plugins directory, run terraform init to initialize it. Documentation about the provider specific configuration options can be found on the provider's website. If you wish to work on the provider, you'll first need Go installed on your machine (version 1.11+ is required). You'll also need to correctly setup a GOPATH, as well as adding $GOPATH/bin to your $PATH.