This goes with the tutorial I posted before this one, about chopping samples, each video has what each other's missing, they go great together. I do serious research for everything I do, and I don't mind sharing the knowledge one bit.
Download BPM Counter Widget for Mac free. Measure BPM (Beats Per Minute) and taps - widget.
Its very helpful to find the BPM/Tempo of any song you want, by tapping it out. Logic's built in auto BPM detector is not accurate most of the time, the best way to find the tempo of any song to me is to tap the BPM out yourself.
I would like for everyone to research Jack Joseph Puig if you can, if you know about JJ Puig, you know your stuff. I have JJ Puig's analog legends bundle plug-ins, they definitely make a difference and make your sounds sound way better then face value. This is one person you definite;y want to follow to learn how to become a true Master at mastering your sound.
http://www.waves.com/content.aspx?id=7307
Compression Basics in Logic Pro 9, this dude is nice with his skills and knowledge, definitely follow him and subscribe, be very careful on who you take your education from, it's not all reliable.