Bests & Worsts Reviews from Amazon

I'm a chainsaw novice. I have a bunch of dead ash trees thanks to the emerald ash bore beetle. I figured I could save some money by buying a nice chainsaw and cutting them down myself. I noticed that it was getting harder and harder to saw the trees and eventually the chain bound and some of the drive links bent. I sucked it up and read the manual. What I didn't realize is the chain gets dull pretty quickly and you have to sharpen or replace it. Shut up, I said I was a novice and I'm too proud to read the manual until disaster hits. I went to the dealer and found a new chain was about $28. That was going to add up fast. I asked how much they'd charge to sharpen it. That was only $10. I went online and watched some videos. There are some cool tools to make sharpening easier, but they are kind of expensive and I'm a cheapskate--that's why I was doing this myself in the first place. I bought a vice and this file. The instructions were somewhat opaque and had no words, but knowing what I needed to do from the online videos, I was able to piece it together. The symbols on the file make clear what you are supposed to do once you figure things out. The first time I sharpened the chain it took 30 minutes, but each subsequent time, I got faster and after a half dozen or so sharpenings, I'm down to about 5 minutes. One helpful hint is that one of the links on the chain is green so you should start sharpening there so you can easily tell when you've gone around the entire chain. I'm not sure when I need to replace the files themselves, but as long as it keeps sharpening my chain, I guess I can keep using the initial files. I just finished cutting up my fourth tree today and am still on my second chain (that first one still has bent links).