go to a saw manufacturers site stihl or husky, husky has a great instruction manual on basic do's and don'ts I think it is well worth the time to look through. also practice handling the saw a couple of times without the saw running get used to it and its controls. one of the best things in the owner manual is what force the saw will exert in the cut. Also with every cut think about if the saw were to kick back where would it go and what would it hit before you begin the cut. Set yourself up before every cut, stable stance, nothing in the way of the cut, think of the strain that the tree is under and what will happen when you release it, make sure that the sprocket tip will not hit anything, above all Take your time, its better to take twice as long to think about the cut and then do it as opposed to being in a hurry and getting hurt. THIS IS A VERY DANGEROUS TOOL!!!! take your time. I also like the suggestion of watching someone that knows what they are doing. but be careful you are not talking to someone that just thinks they know what they are doing
lucky