Volleyball is a fun sport and played recreationally but if you wanted to take the sport seriously there are many skills needed to be successful in the sport.
Overall, you need to be…
-Agile
-High Vertical for blocking, hitting
-Flexibility
-Strong shoulders for hitting
-Hand-eye coordination for receiving, setting, and hitting
-Foot work for hitters
-Stamina for long and enduring rallies and games.
-Communication and work well with teammates
Here’s a video to improve jumping ability which you can do at home. Which can be utilized in volleyball.
Here’s another video which can be done at home to learn and improve basic volleyball skills