Like Tommy's said, just start. Even a hobby artist just needs to draw every now and then to develop your skills, there's no magic wand to become a guru over night.

Nothing teaches you better than just picking up a pencil and starting to put shapes on paper.
What kind of style are you going for, btw? Realistic? Comic-style? Semi-realism? In the beginning, look at the kind of art you like as much as you can, and perhaps even try to mimic the style. Of course, you should never completely outright copy anyone's artwork, but for example, if you really like comic style art, then mimic the style you like but draw your own ideas.
Also, the important thing is to have fun and not set too high goals for yourself right from the start, otherwise you'll just become discouraged and it becomes less fun. Tutorials are guidelines and a way to see how others draw something, they're not the only right way to do it though. Just experiment, start doodling, draw what feels good for you.
Tommy's pretty much summed it up with everything else.

deviantart.com is one of the best places to go for tutorials, and youtube has lots of tutorial videos and progress videos. Also, if you want more realistic and in-depth (professional) tutorials, you could try conceptart.org.