How to create a video for a map?

2) How to place a camera (it has been created, press E)

I used to create a whole bunch of cameras at once, planning everything out. Later, some difficulties might arise.
And you need to create not only cameras but also cam-sets (this is a resource that links two camera positions and defines how and when to transition between them). To do this, press "T" and tinker with the resulting dialog.

1) How to give an animation to a creature

I might be wrong, but it seems like this is done in the Dialog Scene settings. You select your scene in the resources, press "...", see a dialog box with a bunch of settings, where some of them should already be entered.
You need to configure Animations or something like that.