Take detailed notes. Most classes give a lot of information, and it may come out of order from the way you would use it. Just write it all down and go back and make sense of it all afterwards. If the class allows it, take pictures of all steps of the process.
ZBQ Competition BBQ Team, Rhode Island
"The Most Dangerous Team in BBQ" - Jon Vallone
KCBS, KCBS CBJ, NEBS