Do you plan to specifically train with kettlebells only? I'm just mentioning this as there are other options to consider too when it comes to losing weight. But anyway I'll try to give you some ideas:
Start with the basics like the kettlebell swing, that's a solid starting exercise. It is a good option however to first off see if you can find an actual certified person to teach you how to use a kettlebell in person ... If that isn't possible, then look online for example programs with kettlebells and learn more exercises, but really look hard for the experienced guys that know what they're talking about, don't go to some mainstream website. Once you get the hang of things you could try stuff like kettlebell complexes which are tough in terms of cardio as well as working your muscles. Good luck
