Take your time, follow the triple check protocol when connecting:
Look before you connect, look after you have connected, then check again to make sure you have the power cables the right way round!
Never, ever, deviate from this and you will never fry a module!
Seriously, I will reiterate, you have so much already, obviously up to you... but I strongly recommend you hold your horses going for more modules - you will appreciate everything so much more :)