This videos are made using the Sydney theme, but they apply for Perth, Rocked and others. Only difference is that Sydney provides a slider whereas the others provide an image header.
Initial configuration
This video shows how to add new languages to Polylang and also what the default settings should be.
Front page and header in your secondary language
Learn how to add a page for your second language and also how to translate the header.
Menus for each language with flag-based language switchers
Translating Services, Employees etc.
Once you copied your front page to your second language, all you need to do is to translate the CPTs, widget titles, text widgets etc. We're showing how to do it only for the services in this video, though the process is similar for the rest.