I have recently unlocked the Blu job and I am having a hard time learning these spells.

I keep reading different things like use bst and have the charmed bst fight the monster your trying to learn from and stuff like oh you need to be lvl of the spell to learn it.

So I was wondering if anybody here can give me some better advice than this non-scense cause none of that is working. And the only two spells I have learned so far is Foot Kick and Wild Oats and Im already lvl 9.