First Time Playing Online Game? Lost in the sea of acronyms and MMO terminology?

[Someday]

Except the PBoE because I don't understand it enough from the brief description. If anyone cares to elaborate that would be greatly appreciated.

No one seems to have answered this. While AoE affects and is centered on the target and his surrounding area itself, usually at a distance from the caster, the point-blank is centered on the caster. It also has an Area of Effect, but the center of it is the caster, not the target. Usually used when the caster is overwhelmed by enemies.