First, one should count the calories they would like to burn by jumping the rope. It all depends on how much you weigh and when you start. If you weigh more, you would require more energy to work against gravity to move your body. And by doing so, you would be required to burn more calories while working out.
Beginners can start making five successful hops before they get tangled up in the rope. And very soon, you will be able to do 10hops and then 15 in a row. This way, you will attain repeated success, which would, in turn, is a great way to stay motivated. Once you are successful, then be consistent and achieve your weight loss goals. It is time to challenge yourself with something which would be a bit hard for you.