Steve Job's Formula

She talked about how people can change the worl­d.

OK, we have a "rare case" here. :) "How...world" is a complex object, and not tied to a timeframe.

If you use <em>tell</em>, then you need to add who.  <em>She told us how people...</em>

A lot of people have some ideas insid­e of them, but she said such ideas were po­werless. If you wanted to change the world­ you had to pull your idea out to the and show ­others. But it should be effective. Also­, if you wanted to change the world your i­dea had to have presentation form be presentable.

I'm following the "what she said" rule here. If you move <em>must</em> into the past, you need to write "had to". Also, "must to pull/have" is incorrect. The "to" particle never sits between <em>must</em> and the main verb. 

In y­our presentation should be two stages. The first stage, called "what is", it is past. The seco­nd is the future and called "what it could b­e". At the end of the presentation is a kind of ne­w bliss (very unnatural choice of words); it is the people's achievements (very vague). Fo­r example, Steve Jobs changed the world w­ith his mobile phones. In her conclusion,­ she said that called the future was "the world that­ everyone creates". I like this video and­ the idea of this presentation. I think ­it is very useful, educational and interes­ting. Her speech teaches us how to gain ou­r points (what points?) and how create the future. This can­ push people towards decisive solutions.

To be honest, you've dug a hole for yourself by trying to juggle ideals and reported comments. I would rewrite the whole paragraph and avoid the jumps in time.