The 3rd Migraine World Summit it currently on - various speakers, top in their field giving advice. I've just listened to Neurologist Trupti Gokani talk about the gut as a 2nd brain and how a healthy gut can help migraineurs, interesting stuff!
Register at migraineworldsummit.com and your will receive emails allowing you to access the podcasts each day 
Chronic migraine
Ocular Migraine?
Migraine Diaries
Complicated Migraine
Chronic migraine 
