Good day.
I am having trouble understanding how the blend command works.
On the tutorial video it seems incredible easy but no matter how I tried cannot make it to work by selecting 2 edges that needs to connect.
I have attached a good one from the tutorial and a one that I try to recreate.



Also what does the flip command do?
In my mind it should flip the object in an axis but to me it does nothing.

I am sure the answers are easy but I could not get these to work.

Thank you!