RetroPie Project Documentation
RetroPie Setup Guide for Raspberry Pi
Retropie vs Recalbox: What's the difference? – RaspberryTips
RetroPie - System76
Install RetroPie — SunFounder Retro Game HAT documentation
RetroPie Manual Installation Guide, including the Version 4 Setup Script Revised Menu Structure – Retro Resolution: video gaming
Doom - RetroPie Docs
Please help! Got gifted this retropie/emulationstation few years ago,, and want to add games to it. Not sure if picture helps. : r/RetroPie
RetroPie Manual Installation Guide, including the Version 4 Setup Script Revised Menu Structure – Retro Resolution: video gaming
First Install-Newbie - RetroPie Forum