Personally before my AC's i went through all my notes to ensure they were fresh in my brain. I also checked all the major news outlets and read through any new developments on my topics of interest ( but I didn't need to use the information in my interviews anyways, however it is better to be safe than sorry).Thank you! Also, is preparing a few hours before the AC recommended.. remember seeing something in the forum suggest that I should try to do something unrelated immediately prior to the AC to help with nerves.