Glock triggers are easy to use for the majority of people. Some gun enthusiasts get accustomed to 3 pound custom triggers and are handicapped when shooting service pistols like the Glock. Funny thing is, most new shooters do fine with Glocks, while gun guys whine and complain about the trigger.
Just work on proper trigger reset and you should do fine with the Glock. You may shoot low/left when you begin with the Glock. Make sure you are using proper finger placement and watch the reset - you should be fine.
It's pretty easy to replace trigger components in a Glock. I've never felt the need for anything but the standard trigger, but hobby shooters may prefer the 3.5 pound connector. I use mine for defense and just left the trigger alone. It shoots fine - I managed to finish at the top of my last class at Front Sight even though I was "handicapped" by using a stock Glock 17 against custom 1911s and such. (Amusingly, just about every 1911 malfunctioned at least once, while the little Glock just soldiered on with perfect reliability.)