@radialMelt When it comes to color-correcting film scans, there are two somewhat disconnected parts. First, you need to read something about inherent characteristics of film. TBH I do not have a link to share. The goal here is to understand
what needs to be corrected. Roughly goes like this: the film emulsion layers are not equal. The topmost layer gets more light and also absorbs chemicals a little faster. As a result, exposure and gamma on each film layer is different. Cyan/red gets 0.5EV more light (and higher gamma) than Magenta/green, and Yellow/Blue gets even less.
Then, you need a book on basic digital image editing. The key concepts to understand IMO are: the histogram, channels, and the curves and levels tools. Also, understanding the concept of adjustment layers (not to be confused with film layers) is also helpful.
Then you combine this together, and it becomes clear that to offset the exposure differences you need to "shift" red and blue histograms to align with the green one. To do that you need two reference points: the true black and true white. Next step is to normalize the gamma. Best to leave the green channel alone, but adjust gamma on the red (down) and blue (up). Follow that with some saturation bump, which is required because of imperfect color separation of most scanning platforms, and the global color temperature adjustment to taste. That's a rough overview of what usually happens.
Obviously there's a lot of what one can do with an image after that, from selective color surgery to complex masking or introducing deliberate color casts selectively into shadows, midtones or highlights. But the steps above are basically necessary to simulate what RA4 paper is doing.