Bent over rows:
Have a bench in front of you to place one arm and lean over to create an almost table-top position. Hold a dumbbell in your working hand, keep your hips and shoulders squared to the floor as you pull the dumbbell up and in toward your hipbone.

Weight Recommendations:

Beginner: 5-10lbs
Intermediate: 12-35lbs
Advanced: 40-65+ lbs

Step ups:
Hold dumbbells in your hands, step one foot on the box or bench and press through your heel to step up, slowly step back down and repeat - you can do all on one side or switch back and forth between legs.

Weight Recommendations:

Beginner: Bodyweight-7 lbs
Intermediate: 10-25lbs
Advanced: 30-65+ lbs

*Modification: do this without weights!