yeah „simply“ understand the terms ABC, PreCast, SlideCast, Weaving & the use of not only selfbuffs but buffalignments & worst-case utility (when to red or even heal)... those things u can’t buy with a booster potion or master by reading the tool tips.

The basics are way more important than any tooltip or rotation u blindly copy but don’t understand in the first place. It’s like Kaiserdrache already said there is no shortcut for exp... no matter what u try.