Glocks are fine pistols, but I would never recommend a Glock as someones first gun. The CZ75 would be a better choice for your first gun out of the two. Isn't the CZ75 less expensive than the G19?
Actually, I would never recommend any semi-automatic pistol as someone's first gun. I always recommend the Taurus M627 Tracker, with seven shots of .357 Magnum, as a first gun for men.