Guild Wars 2

I have been to metabattle.com and have seen the builds to use for each aspect of the game. My question is what is my role in WvW, and separately my role in regular PvP?

Edit: With role I mean healer, ‘taunter’, holder etc.

I do fine in PvE, but I don’t quite get what I SHOULD be doing with everything else. Where do I even start in WvW

P.S. I realized this should have gone in the WvW or PvP forums after I started, so sorry.

You are in the right place if you need advice for guardian specifically.

Let’s start with sPvP. Your best bets for pvp are straight-up burst DPS, support or support/DPS hybrid.
Burst DPS:
http://gw2skills.net/editor/?vVAQNAT8dn8cCVDhlDBWdC8DhlEiSe5j+s/aZDgEIL/+vAE-TpQSABtWGAg9HAA
Trapper runes, Speed/Traveler runes and Dolyak runes are popular variants. Amulet can be Paladin as well, if you opt to be a bit tankier.
This build can be found from MetaBattle as well. Same goes for the support, which I have never used so I won’t pretend to know what that’s about.
Support hybrid:
http://gw2skills.net/editor/?vVAQNAT5dn8cCVDhlDBWdC8DhlEiCrBygy8aZDgEQe5j+rH-TpATABFXGAg9HAA
I use this build personally atm. Strikes a good balance between full support and DPS, but is a bit more selfish with healing than the support build. It’s not quite optimized yet, you might be better off with a shield/Stalwart Defender. Start with LB on max range, try to land as much of the #5 as possible. Use JI as a stunbreak more than a gap closer.
The same rune choices apply as in the DPS build. I like Speed runes for the extra vitality that brings your outgoing healing to +20%. As for the sigils I use Transference and Force.

For WvW I’ll only give general advice, since I don’t do it much. Edge of the Mists (EotM) is a good place to go to learn how it works. Just find the commander, join the squad and follow the zerg. Try to pay attention to what’s going on around you.

Thank you for the help and the links, I’ll check those out.