There are countless Mac OS resoures on the web; here are a couple of “wells” to draw from and are always being updated.
1. At apple.com/pro you will find a little menu on the top right side of the page. Under Techniques Mac OSX tips and Resources you will find many useful tools. Check them out and see it it doesn’t fit a need you have.
2. Another great place to get up to date info is A New Mac Tip Every Day. They also have a widget so you can quickly check out the latest and then jump directly to their page.