Firstly I must say that if you are having trouble starting your chainsaw you are at serious risk for an injury. Take care and concentrate on the safety instructions that came with the chainsaw.
Adjust your choke settings to full, give it a good prime and fingers crossed the chainsaw should start. Sometimes the pulley is stiff or stuck. In this case check to ensure the switch is on. Sometimes chainsaws are stiff if in the off position. The full prime of petrol should help the start. Maybe your spark plug needs a clean or replacement.
If you are still not starting your chainsaw have a look at a corded or electric chainsaw.