One of the tools for the day's work was my circular saw. As I was working with the saw it occurred to me that I hadn't taken any time to do my Elmer the Safety Elephant thing. The circular saw is a versatile and powerful tool that can do great things or cause serious grief.
The video I picked up has a two fold advantage. One the gentleman is explaining the basics of circular saw safety, and two it is a Habitat for Humanity video and it doesn't hurt to be reminded of their good work.
If you look at thetoolstore.ca you will see a broad selection of circular saws with various sized blades and of various costs. I have found that a 7 1/4 is enough for my use, it is somewhat lighter than the 8 1/2 saw and blades are available everywhere. I also have not graduated to the worm drive saw like the Skil SHD77 Saw Circular 15 Amp 7-1/4-inch though I used to sell many of them to hard working contractors. My suggestion is to pick a saw that is comfortable in your hand and reflects the amount of work you are going to ask of it. My saw spends months in a drawer collecting dust so I have a lower cost tool, but don't go cheap on the blade. An average saw with a good blade will do better work than a good saw with a poor blade.