I am using PIC16F877A with 8MHz external oscillator. And coding in MicroC

Idea is to measure the pules produce by the sensor for 1 sec and then multiply the value with 60 hence the RPM which I will display on LCD.

Please tell me if my method is right and how to implement it. As I want to show rpm on lcd so I would like it be slow enough so that rpm readings are stable.

I have no experience in timers  if you can give me a basic code to get started with, then I can play with it and find my way to solution ?

Thank You.