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Whether you are coaching kids or adults, professionals or amateurs, the physical court needs to be safe. Inspect the practice and competition courts before every practice and match.  The ground should be free of sharp objects and glass. Check what's above the court. There should be 23 feet of overhead clearance. Remove objects like portable basketball goals, lighting fixtures, and tree limbs from the space above the court. If you're using a net supported by wires, they should be covered with soft material. Players should never grab the net or hang on to supports; this can cause the net to overturn and fall on them. To reduce risk of collision, players should "call" the ball to reduce the chance of colliding with another player. Having knowledge of first-aid is vital. You should know how to treat common minor injuries like facial cuts, bruises, or minor tendinitis, strains, or sprains. Have an emergency contact plan for more serious injuries that require a medical professional. Planning can be time-consuming, but it is important to figure out in advance what to do during practice.  Decide what warm-ups, drills, and/or practice games you're going to do. Decide how much time to leave for each element. Writing out your plans not only gives you something to refer to during practice, but also serves as a reminder of what you've done and what you're going to do. Some websites provide downloadable planners for volleyball coaches. These templates might help you get organized. This shouldn't be intense: go from 40% heart rate gradually up to 60%, then follow with a  5-minute recovery period. Dynamic stretches are done during movement. Research suggests they are much more effective than static stretches (e.g., touching your toes for 30 seconds) in reducing the risk of injury. Some ideas:  Straight-leg march (hamstrings and gluteus muscles): Kick one leg straight out in front with the toes flexed upwards, and meanwhile reach the opposite arm to the upturned toes. Lower the leg and do the opposite leg and arm. Repeat 6-7 times. Scorpion (lower back, hip flexors and gluteus muscles): Lying on the stomach with arms outstretched and feet flexed so only toes are touching ground, kick right foot upward toward left arm, and then left foot toward right arm. Work slowly, repeat up to 12 times. Handwalks (shoulders, core muscles, hamstrings): Stand straight with legs together and then bend over, putting the palms of hands flat on the ground. "Walk" hands out in front until back is almost extended. Keeping legs straight, walk your feet towards hands. Repeat 5 or 6 times. Drills are focused and repetitive movements and plays that players need to be comfortable executing quickly, without thinking. There are three types of drill:  Skill- and movement-specific: This most common type of drill employs repetition to improve skills like blocking and setting. Use these drills to build good habits and correct bad ones. Tactical, systematic and strategic: These drills practice combinations of playing skills and should be incorporated after your players have developed their basic skills. These types of drills are also the time to teach the team how to communicate on the court. Conditioning: These drills build strength and stamina. Note that the energy required for conditioning drills may detract from the execution technique. For that reason, keep conditioning-oriented drills separate from skill-specific drills during in-season practice.  Keep drills focused and fun. Make your practice plan based on skills you want to improve and/or the problems you want to solve. For each drill, set a goal and focus, and communicate these to the players. Knowing what to concentrate on helps them get the most out of the drill.  Find what works for you. You don't need to constantly incorporate new drills; instead, focus on finding a handful of drills that you and your team enjoy, and use these in rotation, adding variation where necessary. Divide your players up and have them play against one another. This will give new players a feel of the rhythm to a volleyball game and will allow seasoned players to practice where they need it. This will be essential when your volleyball team begins competing against other teams. A good coach will be tactical and able to strategize based on the players' strengths and weaknesses.
Provide a safe practice environment. Plan your training sessions in advance. Start each practice with a light jog for 5-10 minutes. Incorporate dynamic stretches. Teach your players drills. Play practice games. Develop starting lineups and substitution plans.