For swings, make sure you look at several tutorials first. Many people hyperextend their lower backs when they swing (at the top of the swing you need a bit of a hip thrust but it can end with a nice firm glute/neutral pelvis rather than with the pelvis way forward, which can put strain on the lower back).

In any case, kettlebells are awesome! so much you can do with them. I didn't add to the early list Bulgarian split squats 🙂

Keep us posted!