A couple of questions before I blow it up...
1) 2 USB connections, which one is for power or does it matter... Looking at the Zero is it the one furthest from HDMI or closest (again does it matter).
2) As well as acquiring the zero I also purchased a solder station, my first project is to solder on headers to the GPIO's, what's the optimum temperature to do this, I have a choice of 200,300 or 400 Celsius, new to soldering and hey it's only a fiver so no big deal if I mess up.