Hello, I am stuck in tutorial where i dont know why i can’t find the centre of the shape as in the video
Hi,
It’s the blue dot in the middle of the rectangle and the purple dots in the middle of the holes.
I havent seen this, but anyway even using blue dot you cant make another rectangle at center the previous one around it.
I think i made first rectangle in wrong place , i shoulld have made it in the centre of xyz axis.
Snapping can be your friend… and your enemy. 
Look at your sketches in the side panel. Are you on the proper sketch (if there is more than 1)
Also the blue dot does not look like center of the rectangle.
Which tutorial?