I've recently become a baseball fan, though I'm still trying to learn about it - what is the final championship called?
The final game  series is the World Series.  
I know baseball has been around for a long time - when did the professional games first start?
Not sure when it started, but NBC aired the World Series from 1947-1956.
I like to cheer for the Toronto Blue jays - are there any other Canadian teams?
I don't know many teams, but the Blue Jays played the Cleveland Indians and lost at one time
I like watching the pitchers - how far is home plate from the pitcher's mound?  That looks like quite a distance to throw the ball!
sides are and the remaining two sides are and set at an angle to make a point. The plate is set into the ground such that its surface is level with the surrounding ground. Adjacent to each of the two parallel 8.5-inch sides is a batter's box. The point of home plate where the two 12-inch sides meet at right angles is at one corner of a square. The other three corners of the square, in counterclockwise order from home plate, are called first, second, and third base. Three canvas
Reading Festival on August 27, that she did not care about being in the charts, but was more interested releasing what she wanted to; commenting that she started in 1964, and did not become famous for nine years "I would never accept having my career moulded by other people ... I've kept working consistently even though I've not been in the charts." Around this time Quatro recorded a new album that was shelved until 1997, when it was released under "Unreleased Emotion" Quatro briefly returned to recording