skill order on brand

I'm far from 'pro', or even a 'Brand main', but I'd say it's situational. E and Q both have their strengths and their weaknesses, which may matter more or less in any particular game depending on matchups and team composition. E offers better AoE damage (and thus waveclear as well as teamfight value) and is undodgeable. But the short range means higher risk. Q offers Brand's only in-kit CC, longer range, and higher (single target) damage, but is dodgeable and is less adept at setting up those teamfight-devestating ults (since it only sets one target ablaze, it will only guarantee one champion-targeting bounce).

Personally, though, I usually go with one point Q, one point W, one point E, max W, max Q, max E (with R whenever available, obviously). That level 3 burst is nothing to sneeze at.

Most of the time go with Q, it becomes really low CD and since you have no escapes and are extremely squishy going into 475 range to E spells suicide in most mid game skirmishes/teamfights.

edit: getting 2 points in E is a bonus so you can clear waves with W + E if you need to clear fast. From my experience W E with 1 rank in E leaves them at just enough heath not to die and might mess up some of your cs on mage minions because they're left with like 10hp.