How to create a video for a map?

Wow! I've learned how to work with the camera. I do it like this: I take several frames using the "E" key. Then I press "T" and specify the first and last frames (their order). And finally, in the space, I indicate the unit, their words, and the camera that accompanies all of this.
I still haven't learned how to work with the "sentences" tab, nor how to create special effects for creatures and surrounding areas. At what point should I press the "9" key?