I hope that this doesn't contravene any forum rules, but I just wanted to let you know of my website dealing with chainsaw maintenance (other subjects to follow, but I've got plenty to get on with just with this subject!).
The site http://drivelink.blogspot.com
is particularly aimed at inexperienced users, students and those going for their CS30 assessments.
Should you get a chance, please check it out, comments (good / bad) are welcome. For my part, I work at Sparsholt College teaching around 175 people a year on the forestry / arboricultural short courses.