Here are useful EE Reference Documents by Ohmite. Ohmite had created a useful manual that helps proper resistor and power component selection. There is also a valuable reference on Resistors.
Some of these EE Reference documents are decades old but are Absolute Scientific Documents that an Engineer or Student can refer to.
Resistor Terminology and Ohm’s Law Guide – Ohm’s Law defines the relationships between (P) power, (V) voltage, (I) cur-rent, and (R) resistance. One ohm is the resistance value through which one volt will maintain a current of one ampere
Manual of Engineering Information – An Excellent look at the Basics of Electrical Resistance.
Key to Five-Band Code -This is one code that is Colorfully Encrypted and can only be deciphered by Electronic Enthusiasts.