When a creature has resistance against non-magic weapon what does it mean?

Can a barbarian hit himself to keep his rage going?

Can a barbarian hit himself to keep his rage going?

Is there a difference between attunement and identify?

Quickened Spell, cantrip?

Is readying action to use a magic item the same as readying action to cast spell?

Does casting a spell from a scroll, wand, etc. trigger arcane ward?