Hey, I know how to duck! I can do that at least! ;)

My problem is there are so many buttons I keep getting confused and I'm still having trouble aiming. Even with figuring out how to switch the controls to left handed mode it's not easy turning just the right amount. And when things start getting hectic I end up getting more discombobulated.

I'm hoping it's not actually possible to shoot your own teammates... Though there's a bit of cut scene dialog where Jacob says something about being able to vouch for Shepard's combat skills personally so apparently being unable to shoot the actual bad guys doesn't make your potential teammates hate you...