Is your pump a booster pump? If so, look for a shut off valve somewhere on the intake. If its not a booster pump, your pump may have lost its prime. In which case all you do is fill the pump with water before running it. If your pump has lost its prime however, you've got a leak somewhere in the intake (most likely a bad check valve). If you let the pump run and it gets hot, turn off the system and pour some water in the pump.
If your pump is primed and still no results, you can go outside and check your valves. Make sure they are wired, and have someone turn each zone on one at a time. You will listen for the valve to make a "click" sound when the clock sends power to it. If you hear no click, either the noid is bad, or you've got a short in the wiring.