Black Mage learning

So I see and hear so many post and vid's on what and how a blm is suppose to play so many in fact it confuses me even more as to how to be successful at my job. I want to be the best little blm I can but I also want to do what I feel works not only for me but helps my group. What I currently do is Thun3 Fire3 spam Fire1 till I get my proc flare clipped with my proc transpose blizz3 repeat. I have heard people bash transpose for some reason but the blizz3 hits harder that way idk. Any tips would be appreciated thank you