As someone who has played racket sports (Badminton, Squash, Tennis, and Table Tennis) all my life, I am a firm believer in learning each sport the right way. Some level of coaching is a good idea for anyone who wants to play the game at an above-average level. Taking a few lessons with the Club Pro or a friend who has the right technique, can’t hurt your game.
While looking around for some good training material on squash, I found this interesting video that breaks down the various aspects of a squash serve. Kind of long, but worth it if you are a club-level player.
If you have ever wondered why Squash sometimes appears to be a subculture rather than a professional sport, here is a perspective:
Squash: A Sub-Culture or Pro Sport?