I am a Magento backend dev — which Claude Code learning path should I start with?

Start with the Backend / Service-Contracts path. It anchors on the three things every Adobe-style PR is judged on: Api/ + Api/Data/ interfaces, a Repository implementing the interface, and DI preference/plugin wiring in etc/di.xml. Spend the first 5 days re-implementing one of your existing modules with strict service contracts; have Claude Code review each commit against phpcs --standard=Magento2 and phpstan --level=6. Skip the Hyva path until you can scaffold a working REST + GraphQL CRUD without looking at docs.