https://heyloopy.com/categories/ncees-reference-handbook/Recent content in NCEES Reference Handbook on HeyLoopy: Build Expertise. The #1 AI-powered training platform.Hugoen-usThu, 02 Apr 2026 08:09:24 -0400https://heyloopy.com/learning/guides/heyloopy-vs-ppi-for-the-fe-and-pe-exams-the-reference-manual-vs-the-equation-drill/Thu, 04 Dec 2025 00:00:00 +0000https://heyloopy.com/learning/guides/heyloopy-vs-ppi-for-the-fe-and-pe-exams-the-reference-manual-vs-the-equation-drill/We compare PPI’s reference manual focus against HeyLoopy’s equation drills to help engineers decide the best strategy for passing high-stakes licensure exams.