“Good device for doing command line or basic computing on. Too slow to run apps on raspian but that isn't unexpected with the specs! I recommend the raspberry pi 3 or higher for GUI stuff and more intense processing.”
“The pre-soldered header does not come with all the pins in place, yes the 40 pins are there though there are 4 other pins that can be fitted. not every one may need these 4 pins though if you don't have the confidence to solder having the pins fitted would certainly help.”