Game Maker Tutorials

The best way to learn how to use Game Maker is to work your way through some of the tutorials.

Official Tutorials
There is a collection of Official Tutorials for Game Maker.

Tutorials on GMC
There is a large number of tutorials available on the Game Maker Community. SImply check out the forum on Tutorials and Examples.

Other Tutorials
Many other people have created tutorials of various quality.

GamemakerTutorials.com - A large collection of free video tutorials sorted into game categories.

More tutorials can be found on http://www.gmtutorials.com. However, it seems the site has not been updated in quite a while.

64digits
You can find many tutorials and examples at http://www.64digits.com.