You’ll do fine. The most important thing is to just pay attention and have situational awareness of what is going on around you (as in stick with your team, don’t go chasing off after a player when he’s standing in front of a keep full of hostile NPCs).
The WvW basics:
Supply is generated by Supply Camps (looks like a tent icon) on the map. Supply is shipped primarily through Dolyak caravans to the towers and keeps along the road. Supply is used in these keeps to upgrade the walls, doors, build cannons, etc.
Supply can also be carried (up to a maximum of 10, which is a small amount) by a player. NEVER take this supply from a friendly keep/tower unless you are actively repairing/defending it during a siege, only pick up supply from Supply camps. Supply carried by a player can be used to construct player-built siege weapons such as burning rams, arrow carts, ballistas, catapults, and trebuchets. You buy blueprints for these from siegemaster NPCs. You then place them on the ground and use your supply to construct them.
If you have a small group of players a good activity is to capture supply camps, raid dolyak caravans, and enlist the aid of various NPC camps scattered across the map. The NPCs will help a little by attacking nearby hostile (or defending friendly) supply camps. They won’t stop a determined attacker, but they can make a difference if it’s only a small group raiding the camp (and it’s great EXP and money, so why not?).
When attacking a tower or keep there’s a couple basics to remember. Regular weapons basically do no damage to keep doors - lets say 50 damage. A ram blueprint costs 6sp and 30 supply to construct and deals 8000 damage every 4-5 seconds, so you can do the math. What I’m saying is, don’t be one of those idiots who refuses to bring supply to help build a ram and instead just autoattacks the door. If more supply is needed to build additional siege and you have a nearby supply camp, it’s better to run back to grab more supply then sit and punch the door. If your rams are built and swinging away, your job is to protect them from hostile fire (as a guardian your protection dome thing is invaluable) and to prevent additional enemy reinforcements from entering the keep. People using siege weapons cannot heal themselves while operating them, so if you are kitted out for a lot of support abilities try to keep them healed and cleanse conditions off of them. If the keep is not being defended and you have nothing else to do, by all means poke the gate with your sword at that point. :)
WvW isn’t really a solo experience but if you find yourself just roaming around on your own, you can take out enemy Sentries and Dolyak caravans. Sentries aren’t terribly important, but they do provide an early warning system and since they stand on the roads they can harass enemy caravans that come through. They’re primarily there as an objective for solo/duo players that provide a decent chunk of EXP/money.
