Kettlebell Sport is first and foremost an endurance sport, not a strength sport. Beginners often confuse the two and move up in weight too quickly, without realizing that it takes months for your joints, tendons, and ligaments to adapt to being under load for such a long period of time (compared to the few seconds spent under load in any other weightlifting sport). Unfortunately, this often leads to an overuse injury.
Beginners can avoid overuse injuries and prep their joints and tissues more effectively by incorporating isometric drills into their training, i.e. overhead hold, rack hold, farmer walk. These drills will build stability and strength, as well as teach the lifter how to relax in the rest positions.