# Lesson 1 complete; primaries deferred

Learner finished lesson 1 (when OPFS fits) and can work choose/reject decisions for OPFS vs IndexedDB vs Cache Storage vs user-visible File System Access vs memory/Web Storage. Primary external reads (web.dev Storage for the web; web.dev OPFS article; MDN OPFS) were **not** done this session. Next lessons should teach the handle API surface from cited sources and use the web.dev OPFS article as the deferred primary — do not re-teach the full spectrum from zero.