Warrior leveling build
Get a greatsword, go to town. Pick up the 20-pts-in-Arms Blademaster trait asap (might on crit). I tended to use a longbow in my second slot so that I could gather up 4-6 mobs and obliterate them if I had the opportunity (F1 > Lb 3 > Lb 4). GS is great not only because HB is high damage and fun, but because GS 3 and 5 let you zip around the map to the next mob, as well as GS 3 being like a third dodge.
Whatever makes you happy.
About the only weapon we have that isn’t workable for solo PvE is rifle since it lacks AoE (even then it’s useful for kiting around champions). Bow has a lot of AoE skills and off the top of my head everything else hits AoE with autoattacks.
As for utilities, healing signet, the might and precision signets whatever they’re called, whatever for the third utility slot, and signet of rage.
The passive boost from the two utility signets is likely more useful than anything else when activated for solo PvE so you’re not even really going to use them. You can equip dolyak in the third slot for extra toughness and pop that one whenever you need a bit of stability.
There’s a trait that gives precision for unused signets but I don’t think it scales properly at lower levels anymore. Even with a lot of signets might be best to look elsewhere for traits.
Priorities, what to do?
Spend hours with dye
Yeah, you definitely want some mobility skills for leveling so either GS or Sword is a must. You can do a build with both for super high mobility (something likes GS/Sw+Wh).
Other good weapons to pair with either sword or GS:
Mainhand/2h:
Longbow (great aoe ranged damage)
Axe (High melee cleave damage)
Offhand:
Warhorn (good utility)
Mace (aoe KD)