I would like to say that this is my first guide so it would be short and simple, feel free to comment, and my english is only decent :).

Talents: I prefer this one if you've gotten control over brand, like placing the Pillar of Flame etc. You can also go 9/0/21, that work fine aswell

Runes: i take the CDReduction, AP and Magic penetration, so you can nuke them abit harder :)

Pros and cons about Brand

Pros:
Low cooldown potential allows spamability of abilities in the mid game phase to apply the passive
Range for abilities is enough that you can hit an enemy with proper timing
Abilities provide excellent combos
A beast in harrasing
quite a good farmer

Cons:
squishy
with only 1 target abillity and 2 skill shots it can be hard to hit the enemy without proper practice
his combinations are the key of his damage output, so if sear or pillar of flame is avoided he might have to wait till the CD is over before he can attack again
you might often be focus

Items: the reason i get Rylai's and Arch-Angel before Deathcap is because i prefer the health and mana boost, so u can easily spam your spells and farm without worrying about your mana, and makes u less squishy. You should sell Doran's aswell for more ap or survival item.

Skills: His skills and combinations takes practice to learn, dont give up after 1 or 2 games, keep on practice, i promise BRAND IS A BEAST when you've gotten the control over him

reason why i max sear as the last skill: Its simple, in lanephase it can be hard to hit with sear if the enemy use minions as shield, actually there are some bugs aswell, they are hards to notice but there are some, like hitting the target behind the one it should've hit, i've also seen it just fly through the opponent

Laneing: in lanes i normally just harras with Pillar Of Flame and conflagration until my lane partner is ready to take them down, but dont remember to be abit defensive and farm, be more defensive vs some champions like Kassadin

Elixir: Elixir is a very important item, why? because 20-40 AP and 10% CDReduction is quite usefull in every lvl. You should buy it like after you bought an item and got 250g leftover, or when you cant get more items.

PS: The other build in this guide is one i highly recommend aswell, the choice is yours :)