– Install and activate the core WPML plugins (WPML Multilingual CMS, WPML String Translation, WPML Translation Management), and then other WPML plugins that may depend on them.
– Set up WPML from WPML → Languages. See WPML Getting Started Guide for complete reference, but the initial simple three-step setup is self-explanatory, asking you to choose your default language, a set of active languages, and a language selector.