Got some resistors today – first lesson learned. Do NOT buy blue resistors.
Resistors generally come in blue or beige. To read a resistor’s value you have to decode the coloured bands on its body. The blue makes it hard to easily distinguish colour bands.
This is actually a good picture and it’s not too hard to tell the difference. But in real life some of these things are 5mm long and less than 2mm thick.
Try telling them apart then!
So lesson 1 – avoid blue resistors.
Really basic resistor coding chart.