you have to be well-informed as to how to go about being an actor.

你要消息灵通，知道如何当演员。

想成为明星吗？ - SpeakingMax英语口语达人

And also be well-informed as to what you need to do and the steps you need to take

对于你要做什么，要采取什么步骤，你都要保持消息灵通，

想成为明星吗？ - SpeakingMax英语口语达人