i) I downloaded this game, would love to download a manual, but can't for the life of me find one

ii) I have read about the basic differences between races, but don't really understand what they mean strategy-wise - does one favour turtling, while another favours zerging, for example?

iii) a small thought, but this game would be hugely improved for me - in terms of atmosphere, rather than gameplay - if there were small movies or whatever demonstrating a planet's inhabitants cowering in awe as my mighty battle fleets destroy them etc. Any plans for something like this?

iv) are there any random fun events that take place, without affecting gameplay execssively? (more aethetic than strategy altering)