Thanks for the questions.

Here's the point: The present day humans didn't evolve from the present day apes. But both of them shared a common ancestry.

Like I said in the post; evolution is continuous. As a matter of precision, the rate of human evolution has increased lately, and this is linked remotely to advancement in technology (and of course, neuroplasticity would have a part to play in this). Then, talking about the next stage of human evolution; it is already evident that technology would dictate this; and many superhumans would arise (it's been termed Human+).

And of course the ultimate destination could be singularity.

And what was the first organism that started to evolve?

This can be traced back to the prokaryotic cells; though this post does not cover that area; just human evolution.

Thanks for coming around