Firstly i do not claim to be the greatest Heroes of the Storm player that ever lived and with all guides you should adjust and tweak to your own playstle, weather it be more ranged focused, hybrid or melee with this Hero.

Tier 1

Wolfheart - This is by far the best first talent for a Worgen focussed build. Most of the damage will come from auto attacks which require Inner Beast to be up constantly do do amazing damage. Reducing the cooldown is required especially at early game where you will fall out of range or unable to maintain high uptime on Inner Beast.

Tier 2

Insatiable - I prefer this talent over the others simply for the fact that he is mana hungry through early and mid game and even early late game. Using combo abilities in human and then worgen form takes a load of mana and having enough to Disengage safely after a kill is essential especially to maintain Wizened Duelist Stacks.

Tier 3

Wizened Duelist - If you want to do max damage this is a must. Unlike Gathering Power, this affects attack damage auto attacks and only requires 10 stacks top reach the maximum. If you having trouble with staying alive or gaining a good alternative is Incendiary Elixir which is great for getting Nova and Zeratul out of stealth.

Tier 4

Go for the Throat - Extremly high damage and similar to Nova's Triple Tap. I use this to secure a kill or repostioning in a pinch. Extremly useful as you do not have On the Prowl yet and enemy heroes can get of range especially if you are slowed. Engage to get in to melee with Darkflight and use Go for the Throat when they start running.

Tier 5

On the Prowl - This is must have talent choice. Slows are not your friend and with an auto attack heavy melee Hero getting in and staying in range is the top most priority to maintain damage. The 30% speed increase will negate most slows. The 30% speed activates after 3 seconds of Inner Beast being up, i recommend auto attacking in human form with Inner Beast activated for 3 seconds before jumping in with Darkflight

Tier 6

Executioner - This is highest damage output for auto attacks but is highly dependent on your own team makeup. If you have a team with reliable Crowd control, especially slows, this will award you with the most benefit. If not go for Alpha Killer which is a solid choice.

Tier 7

Tooth and Claw - This is my go to default talent. Puts all that stacked attack damage auto attacks, cleave everyone. Five hits for the price of one. If the enemy team seems to be more spread out and postionally aware Unleashed is also a solid choice as it allows more repostining when needed and getting those runners.

Human Form > Inner Beast at least 3 seconds >> Gilnean Cocktail > Worgen > Darkflight >
Razor Swipe Try to position yourself in the their escape route > Go for the Throat to secure the kill or if they escaping, to close the gap > Disengage > Gilnean Cocktail if still in range of another hero