The new talent system may seem daunting at first glance. But it's really not as complicated as all that. Let's cover what is and isn't changed.
For starters, while you no longer have to train abilities as you level, your class trainers do still provide several services related to talents. For a fee, your class trainers can completely reset your talents, allowing you to pick again from every talent tier you have available. They can also completely reset your glyph selection, allowing you to reselect your glyphs, and they still offer Dual Talent Specialization for 10g. They also allow you to reset each of your class specializations. The various reset services cost you gold up to what appears to be a cap of 59g, although that may change before the game goes live.