Nothing comes easy...
A painter will select his brush based on temperament and look.
A photographer should select his film likewise.
A painter selects his pigments and pallette, again to suit his feelings and to fit the content of the end result.
A photographer should select his developers for the same reasons.
A photographer should learn to work with one film developer combination to fully understand the effects of how agitation and development times affect the look of that particular film.
After this is well understood I recommend to buy a brick of the same film (50 rolls of either 35mm or 120) and try various developers, shooting the same subject matter with the same film. Then you will understand what different developers do.
In addition to making test prints of each type of film / developer combination I would further suggest to look at film grain structure under a microscope, then look at corresponding prints. That way you will better understand why a given print looks the way it does.
After this I'd buy ten rolls of each type of film (slow, medium, fast, - and different brands, Efke, Ilford, Kodak and Fuji, Arista etc...) and try these films - shooting the same subject matter - and process the film using the developer - or developers you felt looked best in your deveoper tests.
Then you'll have enough knowledge to select your film like a painter select his or her brush.
By trying your favorite developers from your developer tests you'll learn to select your pigments and pallete - again like a painter.
Finally, Id say that is important to alway test and try new films and developers. To follow blindly what works for someone else's style will only lead to plagiarism and boring images.