Early game tile-able red circuit section : r/factorio
Early Red Circuits : r/factorio
Compact Green Circuit Design for red belts : r/factorio
The Dahn's Over-Engineered Red/Green Science Blueprint : r/factorio
Integrated blue circuit [marathon, no modules] - Factorio Forums
Red Circuit build question - Factorio Forums
12] Factorio Season 2 - Green & Red Circuit Production (Let's Play) - YouTube
Factorio Blueprints for beginners | Rock Paper Shotgun
I made a slightly more compact early-game green circuits build than the standard by using the extended red underneathies! It's tileable, too! : r/ factorio
Yet another green cells build :) - Factorio Forums
Smallest Green Circuit factory (24 beacons, 11x33, full blue belt, UPS-friendly). I DARE you to make it smaller! : r/factorio