Tyrande is a hero of strategy. It hybrid traits make its solid place in giving advantage to surrounding team mates. So this build focuses completely on empowering the team. You cannot go solo. Stay in the back lane and try not to become an easy target becasue of low hp.

This build focuses on team heal. You will continously heal your team mates. Tyrande heal is the best, when you heal your team mates it also heals you( including bonus heal on ally ). So continously heal allies. Thats why you will need to reduce its mana cost.
So with this build you will continously heal your team mates, take good positions mark and stun dangergous enemies, and your hero power will be the ultimate victory weapon.
I dont find the second talents much usefull so I take a healing ward. It can help in some situations.

The starfall of the tyrande is reall really good with battle momentum. It can take care of crowd control and provides good strategic advantage. Also always go Calestral wrath with starfall ulti becasue eveything else becomes usless.

In a fight, run asap you see enemies targetting you. They will waste their time and energy, giving your allies an opportunity to finish the task. Thats a play style dependent on you.