How do you improve learning curve when working with Reinforcement Learning?

On How do you improve learning curve when working with Reinforcement Learning?, the part about learning and curve stands out to me. I would test one small workflow first, keep the variables consistent, and compare the result before changing several things at once. The original point — "I have been exploring Reinforcement Learning and wanted to ask people who have tried it in practice. I am particularly interested in learning curve and beginner tips. I would like…" — gives a useful starting point for that comparison.