A few questions from a new player.

[Anova]

1) Go to Menu -> Character Configuration -> Filters and set up your filters to only target enemies, party members, players, etc. That should help considerably when tabbing. The picture provided is for a controller, but it also applies to mouse and keyboard


2) Tank armor, specific for gladiator and marauder has equally high magic and physical defense stats. Your first set is the bronze cuirass, bronze celata, padded hempen trousers, bronze sabaton, and bronze mitts at lvl15. You can generally see the item stats and if it says gld/mrd only, it will have high magic and phys defense.

3) Chronos covered it. Mog station.