The field of electronics is broad and complex enough to warrant its own major. However, there a couple manufacturing aspects within electronics that are useful skills for any maker.
There are a handful of building block components in electronics manufacturing. There are two broad categories of devices: passive and active. Passive blocks, or reactive elements, are those that do not require a power source to operate. These include resistors, capacitors, and inductors. The other category is known as active components are the opposite and thus require a separate power source in order for their functionality to be realized. These include operational amplifier, transformers, etc.
One of the most dangerous tools in use while working with electronics, is a soldering iron. It is used to create electrical connections and joints between pins and leads of different devices. Temperatures can get up to 800 degrees F in order to melt the solder.
Another heat source, a heat gun is used to shrink wires insulation to form a seal around the metal conductive connection.