You are NOT going to bulk up! And lifting anything lighter than your purse is futile. No point. If I were you, I would grab 2 sets of dumbells, one light set and one heavy set. For your light set, please don't lift anything lighter than 5 pounds. And your heavy set can be whichever weight is going to challenge you. I started with 6s to be honest, then moved to 8s. You can do 10s, 12s, 12.5, 15! Whichever you're comfortable with!
I love these!! The flat surfaces make exercises where you rest the weight on the floor in between reps MUCH easier.
*This post contains affiliate links and I may be compensated a small amount.