Only the light crossbow and shortbow are availible atm I think? Druids don't have proficiency, which means you won't get any bonuses (it's a simple 1d20 to hit). It's not idea, but it's not useless. You can equip both weapons, if you check your character via N (be default) you can see you have 2 slots. Bottom left of the skillbar ingame has a swap button too.
