you can get a spoke wrench and pull the rim over like switch said,I would get the park multi spoke wrench that fits 3 sizes of nipple
when you tighten spokes you twist the spoke up to some degree ,when it untwists during riding the spoke loosens off.So I like to over tighten and back off 1/4 turn so there are no torsional forces acting to unloosen the spoke.
So to tighten all the spokes on one side and I would try 1/4 turn to start with (its usually the disk side that loosens off)I tighten each spoke ON THE SIDE THAT NEEDS PULLING OVER ONLY a 1/2 turn and back off 1/4 turn.Start at the valve stem and pay attention cuz its easy to loose track
or if that doesnt make sense forget the spoke windup thing and just tighten them 1/4 turn for starters
Or take it to the lbs