For women if you are a little bit out of shape you probably want to start out with the 10 lb or 14 lb kettlebell. If you're a bit more fit and want a bit more of a challenge you might want to try 18 lb kettlebell. If you train all the time and are in great shapeyou might try hitting it hard the 26 or 35 lb kettlebells, just remember that because of their shape kettlebells give a more intense workout for the same weight as other equipment.