Table Saw Blade Selection

I went to Lowes yesterday to pick up a small detail sander with a gift card from my wife.  While I was there I took a look at their table saw blades.  I didnt buy one because I wanted to do some research on what the different tooth counts were good for.  I checked my YouTube subscriptions this morning and lo and behold, there is a video from the WWGOA on just that topic.  I need to start thinking about how to win the lottery next....