Just starting learn how to properly fell trees when I was beginning I did some sketchy stuff before I really learned. Watch some videos find the good ones learn and improve your abilities. 2nd I wish I had known how to tune a saw. I dealt with a improperly tuned saw the first 8 years of firewood cutting. Then when inlearned how to tune and got it running great I pushed it too far and leaned the mixture to far and blew it up tring to make a 40cc saw run like a 45. Learn to hand file a chain for at least field use. And lastly run from this site before you catch CAD its very contagious and will leave you with numerous too many chainsaws.