Coffee roasting - I've started to roast a coffee for my girlfriend coffee shop as a side job 2.5 years ago and now I start to feel, my learning curve is finally

Coffee roasting - I've started to roast a coffee for my girlfriend coffee shop as a side job 2.5 years ago and now I start to feel, my learning curve is finally growing up. I want to learn how to make consistently great roasted coffee, how to manage entire process and how to keep pushing quality up.