From what I can see, there is this one for the basic Zoom setup, which neither mentions OBS nor two channels (which is an awesome guide for a first setup):
And this one slowly goes into advanced setups (which is great) but it is not exactly a guide, it starts mentioning OBS for two channels, which is a steep hike in complexity:
The other guides are based on OBS.
I wanted to offer a relatively simple method for two channels, backing tracks and effects.