I did a full guide on BR / Macros and such under my name in the Lodestone Blogs
A majority of the time we don't even do /p chat Battle Regimens, we just stack skills macro (ferocity/raging strike/cadence etc.) and select /br and melt mob's faces now.
Supafly Xarcabard - Trabia
***I even included a helpful little chart for people to print out. :)
I have seen 2 youtubes that explain BR rather well:
http://www.youtube.com/watch?v=llfFDu10rds
&
http://www.youtube.com/watch?v=5R2cGqw0q1Y
I play with controller so basic /br macro = winning
Mainly just BR Ruin + Damage but sometimes if done right we stack Constraint on wolves in leves. NM's are a different story.... :)
CKD Website:
http://www.yarrthepirate.com/