It's funny though. You really, and I'll be comparing them to D&D, don't have the usual classes. You have Fighter (Soldier), Mage (Adept), and different Mage (Engineer). And combinations of those three
Conversations with people are like cutscenes, and the dialogue choices are very intuitive. And pretty funny, to boot. Voice acting is top notch, as well as the facial animations. Those are amazing.
Once you get the hang of combat, it'll seem like second nature. You can get behind cover, and either use abilities, or fire, from that point. At any time during combat, you can pause the screen and issue orders to your squadmates. Who are, I admit, sometimes as dumb as a rock (Getting stuck in random places on the map, being unable to walk around walls, etc.). And it seemed you leveled up way too often. 60 is the cap.
That said, get it. Buy it now. It's a trilogy, and it's made by Bioware, so it can only get better!