To begin with be aware what you want to photograph: family - landscape -architecture - wildlife - flowers - people in the street - sports - etc.
Then go out and try.
Did you do any amount of photography before, such as with a point-and-shoot camera or your mobile phone?
With some tutorials:
http://www.cambridgeincolour.com/
Not a tutorial, but a huge forum with helpful people:
http://photography-on-the.net/forum/