: Instructors often release limited-time coupons (often with only a few hundred uses) to gain initial reviews and "social proof". Sites like Coursepig scrape these codes and list them for users.
Free coupons disappear fast (often within 24-48 hours). Sort by "Expiring Soon" to find active $0 deals before they revert to paid.
: While courses can be listed for up to $200, they are frequently on sale for $12–$20. Using coupon sites to get them for $0 is possible, but free courses often lack features like the Certificate of Completion or direct instructor Q&A.
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