Need help please. Have a few questions. :)

[Keydah]

PvP Gear: Yes. It's pretty much all glamour unless you bother with the Wolves' Den, because the PvP that people bother with (Frontlines) is item level synced.
Cast abilities at focus target: If you macro it, yes. Otherwise, you have to select it. To use a specific skill on a focus target, the macro line would be "/ac "Skill Name" <f>"
Special macros: Mouseover is <mo>. It will not target the enemy if placed at the end of the /ac line (for example, /ac "Skill Name" <mo>) but will simply cast it on the enemy without targetting them. [Here] is a useful guide for macros.

[Duskv20]

Is there PvP gear obtained through PvP only? Yes! And it is glorious. Frontlines tends to have FAR shorter queue times than Wolves' Den, and you get the same PvP currency for doing both. I suggest focusing on Frontlines to build up your rank and Wolf Marks (said currency)!
Any sort of special macros? I will be no help here, I'm sorry. I don't use macros.
Also I noticed my character has the option to edit the character and change it? Is that like a 1 time ever thing or how does that work? Does it just appear every so often. You must have used your Fantasia; your character is pretty much set once you create it, until/unless you use an item called Fantasia which can be obtained several ways. Using a Fantasia allows you to re-edit your character from the login screen.