That guide would still be helpful to give you an overview of the process and give you links to other useful documentation to follow. It would be slightly different in the wiring and mounting obviously.
There is documentation to help you get started. The Duet and RRF has a lot of depth, so it's hard to have a super basic hand holding guide for every conceivable printer combination, so it will take some reading to get over the learning curve. And any questions you have can be asked here.
https://duet3d.dozuki.com/c/Getting_Started
I'm not sure what you mean for tricks to the wiring, but there is this: https://duet3d.dozuki.com/Guide/2.)+Wiring+your+Duet+2+WiFi-Ethernet/9?lang=en
Getting connected here: https://duet3d.dozuki.com/Guide/1.)+Getting+Connected+to+your+Duet/7
Config files can be created with the online config tool. https://configtool.reprapfirmware.org/Start
There is an ender 3 pro option there that should get you a pretty good starting point.