What is the suggested beginner size of a kettle bell?

Kettlebell: Male or female? It recommended that a woman with average strength start with a kettlebell that weighs about 18 pounds & that a man with average strength begin with a kettlebell that is about 35 pounds.

No: One size fits all. As it really depends on what your baseline strength is like and what types of movements you plan to do with the kettlebell. If you are only going to purchase one, purchase an adjustable kettlebell. This will give you a variety of weights to work with.