You just need to go into options and play around with them.
I run 3 bars mid, 1 Bar under castbar and 1 Bar vertical down by my right chat window and one vertical down the right.
This is my old hunters UI:
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And my paladin is set up with 2 small bars left and right above raid frames, and then my main CDs down vertial on the left. The rest is 3 bars all hidden with my main abilites and binds on that I dont need to see.
Like my retail paladin's UI.
Spoiler:Show
You just got to learn what the settings do.