Specify the moment estimators for and for the normal distribution

I've looking over my textbook to see how to do this but all I've found is this:

An alternative form of estimation is accomplished through the method of moments. The method involves equating the population mean and variance to the corresponding sample mean and sample variance and solving for the parameter, the result being the moment estimator.

There are no examples or anything, so I'm not sure of what to do. I've tried looking online but haven't had luck finding any examples that I understand.