This practical guide addresses the issue of insufficient Mac storage space, aiming to help users with lower-spec Macs resolve "space anxiety" through efficient management and hardware upgrades.

The core content covers:
1. Space Diagnosis: Quickly locate major users and clean up redundant cache and system junk.
2. Expansion Solution: Compare the performance and cost of external high-speed SSDs and cloud storage to provide the optimal expansion path.
3. Habit Optimization: Build a scientific file management system to prevent storage space from filling up quickly again.

Target audience: Mac users who have purchased the lower-spec storage version and are facing a shortage of disk space.