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The top 20 most-tested facts for each exam — condensed to one page. Free. No spam. Used by 12,000+ tradespeople studying right now.
NEC 2023 Code + Journeyman Exam
Electrician / NEC Journeyman
The 20 most-tested NEC articles, Ohm's Law shortcuts, conduit fill rules, and the exact grounding/bonding distinctions that trip up most test-takers.
Get free cheat sheet →DOT / FMCSA Hazmat Test
CDL Hazmat Endorsement
Placard rules, hazmat classes, shipping paper requirements, and the security plan questions that appear on every state's endorsement exam.
Get free cheat sheet →EPA Section 608 Universal
HVAC / EPA 608 Certification
Refrigerant handling rules, leak rate thresholds, recovery procedures, and the core thermodynamic concepts behind every EPA 608 question.
Get free cheat sheet →Free resource
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