You'll need a good pair of micro wirecutters, a screwdriver for case assembly, fine sandpaper, 300 and 600+ grit emery paper, metal polish and a 15-25W or temperature regulated soldering iron with a good bit which tins easily (many Chinese cheapos have poor quality bits which will refuse to tin and make poor thermal contact, leaving you gouging at the PCB trying to melt the solder).
Before starting assembly check if you have an extra 470R resistor (Yellow purple brown) or 680R (blue grey brown) - if so fit it in the place marked R18. If not, fit a wire link (resistor leg offcut) there instead.
After preparing a suitable working space take the PCB and the 10x 680K resistors (blue-grey-yellow) 560k (green blue yellow) or 2m2 (red red green). Fit these in locations marked for R3,4,5,8,9,20,21,23,24 and 26 as shown:
