Best free resources for CES prep — what's actually worth your time

This is exactly the thread I needed. I sit for my CES in 4 weeks and have been second-guessing my prep. The exam prep area you mentioned is definitely my weak spot. Thanks for the honest breakdown.

Good thread. One thing I'd add: don't try to cram the night before. I did 3 hours the night before my CES and I think it hurt more than helped. Your brain needs consolidation time. Light review or full rest is better.

For the people asking about study timelines: I studied 80 minutes per day for 9 weeks working full time. It's absolutely doable without burning out. The key is consistency — missing days hurts more than extending your timeline.

For what it's worth — I've taken the CES twice now. First attempt I underestimated the practice test questions. Second time I focused almost exclusively on applied practice and passed comfortably. The difference is real.

Good thread. One thing I'd add: don't try to cram the night before. I did 2 hours the night before my CES and I think it hurt more than helped. Your brain needs consolidation time. Light review or full rest is better.

I work full-time and studied for CES in the evenings and on weekends over about four months, so I had to be really selective about what I spent time on. Honestly the free stuff is underrated. I leaned hard on topic-specific practice sets, and the ces/questions/groundwater hydrogeology section was one I kept coming back to because it's dense material and it actually showed up more on my exam than I expected.

If you're short on time, don't try to cover everything equally. Figure out where your gaps are first, then drill those specific areas. I wasted a few weeks on topics I already knew pretty well and had to scramble at the end. Work smarter, not harder on this one.

Honestly the thing that clicked for me was drilling the hydrogeology questions specifically. I'd been glossing over that section thinking it was minor, but it's not. If you haven't worked through ces/questions/groundwater hydrogeology yet, do that before anything else. Those questions are closer to what actually shows up than most of the stuff I wasted time on.

Everything else I did was pretty standard -- read through the ABCEP exam specs, did a few practice sets per domain, didn't overthink it. But that hydrogeology piece was the one gap I almost missed. Just passed last month so it's still fresh, good luck to everyone still grinding through it.

Honestly I almost bailed around week three. The official materials felt like they were written for someone who already knew everything, and half the practice questions I found online were either outdated or just weirdly off from what actually showed up. What kept me going was finding more targeted drill questions, especially for the harder subtopics. The ces/questions/groundwater hydrogeology 3 set was one I kept coming back to because groundwater was my weakest area and I needed reps on it, not just a textbook summary.

If you're hitting a wall don't quit yet. It clicked for me once I stopped trying to cover everything and just focused on the domains I was consistently missing. The free stuff is genuinely decent if you use it strategically instead of just reading through it once and hoping it sticks.

Honestly I almost quit twice. The first time was about three weeks in when I felt like I wasn't retaining anything, and the second was right after a practice test where I bombed the chemistry sections completely. What kept me going was switching up how I was studying instead of just rereading the same material.

The free stuff is actually solid if you use it right. Don't try to cover everything — focus hard on the areas where you're weakest and just drill those. I spent way too long on content I already knew and it cost me time. Once I figured that out things started clicking and I passed on my second attempt. If you're feeling like it's not working, it's probably your approach, not your ability.