The serve and volley has gone ot of fashion. Even in pro doubles, the server often stays back on their serve.
As hard, fast, and deep as returns are hit, the serve and volley is more difficult than ever.
If you have the physical talent and mentality to give it a shot, basically, it requires (as the name implies) a good (really good) serve and a good (really good volley.
Serve and volley does not work unless your serve can elicit a comparatively weak return.
1, Serve hard and comparatively flat If possible)- try for a weak or uninspired return.
2, Follow your foreward momentum from the serve into the court and ( if there is no way to angle your shot for a winner) hit a half volley deep as you can and continue to the net to cut off the angles.
3, If eveything went right, the ball comes back and you put it away-- or you are in big trouble.
Don't be overly fluid with your rush to the net. Pause to hit your half volley. Move foreward, find your balance, set up, strike the volley firmly.
If you get good at this, you will have an edge on all but the better/best baseliners.
Personally, I do not recommend serve and volley as your main tactic-- more as a change-up or surprise-- just like the way you will vary your pace or spin, or throw in a drop shot now and then.
Good luck,
B