Hi! I have three questions, please be descriptive.

1. Is there any way to make Computer build this building or unit that I want him to build? If yes how?
2. Is there any way to make him build something when I want? If yes how?
3. Is there any way to make him build something where I want? If yes how?

Yes to all, but only in a roundabout sort of way. You cannot directly manipulate AIs and tell them what to do. What you CAN do, however, is make your own AI via triggering.

It's a little too complicated to go into detail here, but you should take a look at this for examples. Essentially, you detect certain conditions based on the computer's resources, deaths, etc. and then subtract resources and create a unit based on a death count timer. A greatly simplified version of what laffo16 did in his ZvT map would probably accomplish all three of your goals.

Thanks!