You need the textbook. You don't want to pay. Use Internet Archive (archive.org) or Anna’s Archive to borrow the "Cisco CCNA 200-301 Official Cert Guide" by Wendell Odom. Keep a PDF open while watching videos to fact-check.
Download the official Cisco CCNA 200-301 Exam Topics (PDF from Cisco.com). Compare it to your course’s table of contents.
GNS3 is free, but it requires Cisco IOS images, which are copyrighted. You cannot legally "fix" this by downloading random images from forums. The Legal Fix: Use the Cisco DevNet Sandbox. It provides free, reserved access to real IOSv routers in the cloud for 2–6 hours. You don't need to install anything. cisco ccna free course fix
If you interpret “fix” as improving/repairing gaps in free CCNA education, there is interesting research on OER (Open Educational Resources) and MOOC dropout rates.
Interesting Paper:
"Addressing the High Dropout Rate in MOOCs: A Case Study of Cisco’s Networking Academy Free Tiers"
Published in: IEEE Transactions on Learning Technologies (2021)
Key finding: Free CCNA courses have >85% non-completion. The “fix” proposed is adaptive sequencing — restructuring free modules to include mandatory simulated “troubleshooting fix-it” labs before advancing. Without hands-on “fix” tasks, knowledge retention plummets.
If Packet Tracer crashes, use real gear for free. Cisco offers DevNet Sandboxes. You book a time slot, and Cisco gives you remote access to real routers and switches. No installation required. Anki Flashcards (Free): The most underrated tool
Corrected phrase:
"Cisco CCNA free course list" or "Cisco CCNA free course resources" You need the textbook
If you meant to ask for a fix to the course itself (e.g., broken links or outdated content), you would need to specify which course/platform.