The formulas, unit symbols and much more you can learn here:

Mass, length, time, amount of substance, electric current, thermodynamic temperature, luminous intensity, volume, area, velocity, acceleration, force, energy, catalytic activity, electric charge, illuminance, pressure, power, magnetic flux, capacitance, luminous flux, absorbed dose, activity, inductance, potential, resistance, solid angle, frequency, magnetic flux density and conductance - All these units can be learned and understood in a short time.