# Lesson 2 complete; primaries still deferred

Learner finished lesson 2 (open / put / match): named caches, `add` vs `put`, match options, directory vs entry delete. External primaries (Cache API quick guide; Storage for the web) remain unread. Next ZPD: service worker pairing and serving strategies — teach decision skill from Offline Cookbook + SW/HTTP caching articles; do not re-teach the method map from zero.