What is the specific heat of the solid phase?

If you could just explain to me how I get it, it'd be great

Specific heat is the amount of energy required to raise a certain amount (by mass or moles) by a certain temperature (usually 1 degree Kelvin). The overall units of specific heat are usually Joules / (kg*K), which uses kilograms and temperature Kelvin. The full equation is:

energy = (mass) x (temperature) x (specific heat)

You need to know three of the variables above to solve the equation.