Did someone took BCEN review for CEN?

Hi, I am curious if someone recently joined the offered CEN review two day sessions and how helpful was it? Thank you
I didn't take any review course. I just passed today and I used Mark Boswell's Book and free lectures on youtube. As well as the ENA book with practice questions and the BCEN practice exam. Mark Boswell's book was the most helpful, through practicing questions and reading rationals helped too!