General

I dont know anything about mages

So, I just learned that the Jr. Boogie familiar recovers a HUGE amount of MP every once in awhile yesterday.
I came back to maplestory after about a 2 year break and everything is so freaking new to me. I went from level 1-100 on my F/P mage in the past week not knowing this information and I was wondering what else might I not know? My question to you guys; What other useful pieces of information about mages, or the new maplestory in general, should I know about?