Which software?

[adam ant fan]

I have windows movie maker and I've tried importing video in order to edit to
make slideshows but it's not what I'm after.

Is there any free software which is easy to use and allows you to edit and
manipulate (make the footage go faster/slower/repeat movements etc) video
clips with the finished product being able to upload onto youtube?

 

[The Real Truth MVP]

You can do that with Movie Maker. Right click on the clip in the storyboard
and select Effects.