If you like the Glock, then I think you bought one of the best CC handguns made. If you didn't really like it, bought it anyway, and are now stuck with it. Don't fret, you still own one of the best defensive handguns on the market.
Glocks are easy to get a handle on, especially since you have a background in firearms. As previously stated, buy yourself a high quality holster, one that you're comfortable with. Go down to the shop, and try a bunch of holsters on, see which one works best for you and the gun. You may find that your holster will cost up to 25% of what you paid for the Glock, but it will be worth it.
Then, after getting the holster, comes the fun part - Practice. Practice conealing, practice drawing, practice firing, practice dry firing, practice, practice, practice and then when you're sick of it, practice some more. You want that handgun to become an extension of you, and the actions you need to make to be second nature. Don't be fooled, that only comes with SAFE practice.
Most important, be extremely safe about it. Taking classes are one of the best decisions you can make. Proper training will teach you how to properly practice. Ask the instructor what they recommend you do as practice drills, they are always happy to lay out a plan for you.
Anyway, congrats, have fun and enjoy yourself!