Warrior Fury Tanking

First time playing Classic and I’ve realized that “Deep Prot” is ass so I’ve been leveling dungeons doing Arms tanking with whirlwind axe and it’s doing really well. I know that the meta is fury tanking and I am currently level 45 and I’m wondering when do I need to start doing Fury Tanking? Obviously at 60 but I have two pretty good dual swords and I was wondering if I can start now to being leveling that or should I stick to Arms for the time being. Also, I know fury is mainly for raids but do I use it for end game Dungeons too? Or should I be doing deep Prot or arms for dungeons at 60?

Thanks in advanced. This as been a very confusing topic for me because I can really get a clear answer because I see warrior tanks doing all three