WvW Frontline build
Starting out I would suggest Soldiers Armor + Amulet + Marauder rest. If you can’t get marauder trinkets (can be gotten from map currency in LS3, you can always take the berserker+valk combo https://wiki.guildwars2.com/wiki/Ascended_trinket#Trinkets_with_predefined_prefixes
It’s unfortunately very costly to craft armor, and crafting the exotic versions of wanderer/marauder isn’t worth it though ascended will be worth it in the long run.
Still though, soldiers is a good way to start out. It’ll make sure you’ll have a decent health pool and the marauders part will make sure you don’t wet noodle it.
For weapons I usually like Greatsword because the leap comes in handy
for there you have been and there you will long to return.
A good cheaper option that’s still solid is just using soldiers, GS for #3 mobility and some damage in smaller fights and staff as main support. Sigils and runes are flexible with cheap options. Overall you will contribute quite a lot. Hammer is also good but I prefer GS.