The commands used to check out code from our Google repository are more or less the same as the ones we saw previously while checking out code from WordPress' repository.
A bit later, we will start adding your project's files to the repository, but leave them alone for now. Create a fresh new directory on your computer. Move into the new directory and then try running this command to check out a working copy:
svn checkout https://my-unique-project-name.googlecode.com/svn/trunk/ --username mygoogleid
Google requires an additional parameter because you need to validate before connecting, but once finished, you should see something like the following as output:
svn checkout https://my-unique-project-name.googlecode.com/svn/trunk/ ...