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Abyssea is your friend for learning blue magic. 15min or forced repops aren't bad for the NM-only spells, and the bestiary covers quite a large chunk of learnable families. If you are not done w/...

Yup, best option that I've ever found. Most spells are pretty straightforward/obvious which mobs they come from though if you've been playing for a while.

Try http://184.154.208.218/~tforum/blu/BLUMain.html. It might be a tiny bit out of date (not 100% sure it has all Unbridled spells and advice is not intended for ilvl world,) but it covers most...