After three months of grinding, I finally got my Building Technology Certification last week and honestly I'm still a bit in shock. I was scoring around 58% on my first few practice runs and thought I'd never crack it. The thing that turned it around for me was being more strategic about which topics I focused on — I was wasting too much time on sections I already knew and ignoring the ones that were actually killing my score.
I ended up putting together a proper study guide in week six, organized by domain, and that's when things started clicking. The BTC practice test I used in the final two weeks was way closer to the real thing than some of the free stuff floating around online — the question style and the trap answers especially.
For anyone starting out: don't underestimate the mechanical systems section. I thought HVAC basics would be easy but that chunk alone probably accounts for 20%+ of the questions. Happy to answer questions if anyone's prepping right now.