Hali-ho! I briefly stopped playing BLM around level 30, and just pick it up again now.
I was looking at Arhmorning for a level 60/70/80 rotation guide but I guess there's massive update going on, all of the stuff are gone for the moment so I am here to learn from any experienced BLM.

I only understand the very basics of BLM and I've only tried all the spells up to level 60 (as far as POTD goes), so pray correct me if I'm wrong:
1. Open with Fire 3/ Flare for single/ aoe respectively to gain 3 astral fire stacks and cast Fire 4/ 2 for single/ aoe respectively and throw fire 3 on procs till OOM.
2. Bliz 3 to gain 3 umbral ice stacks followed by Bliz 4, Bliz 2 and spam Freeze for aoe while regenerating mp.
3. Sharpcast on CD

I don't know when exactly should I cast Lightning 3 or 4 without disrupting the abovementioned rotation. And Transpose seems to lose purpose since Fire 3, Flare and Bliz 3 exist?