@FArgHalfnr, I am also not Jopax, but I would still advocate practice. Practice is fun after all, as long as you are drawing what you want to be drawing. MY contribution to this suggestion smorgasbord is that you should practice drawing a diverse array of things. It feels pretty bad when you can draw a really cool side of a mountain, but then the rest of the landscape is shite. Same goes for figure drawing, draw the face epically, but everything thing else is wonky, it feels awful.
You can start anywhere really, Bay12 is a good jumping off point. Just ask around this thread, which has become the new de facto art thread, or ye olde engraver's guild. Once you feel like you've got the ball rolling check out Conceptart.org (WARNING: very professional and oftentimes needlessly harsh in the name of criticism) or even Cartographersguild.com if you're into maps. Another site you can try is DeviantArt (mixed feelings and results here, but a lot of good guide material can be found amidst the sea of ,"what am I looking at?")
If you really do just like art and want to get better consider taking some art classes either in your school (if you're going to school that is) or even in a community college/arts college around you (that's what I did. I did both actually, but they were both extensively pencil-drawing courses and as such its really the only medium i'm half competent in.) Another piece of advice is to not start with digital art, using a mouse is ridiculous and something that's really just gonna hamper you forever and learning to use a tablet is actually rather tough due to it not being 100% accurate and quick as your arm would like, even experienced artists have a tough time going digital if they never used a tablet before.
EDIT: speaking of digital art, my current Wacom Bamboo is starting to get a little old and to compound the matter i've bent its USB plug some and in the next year or so i'll try and maybe weasel my way to the proper familial authorities to buy me a new tablet as a Christmas gift or something. Anyone try those fancy new tablets where the computer screen is ON the tablet? I've looked a number of these and at the moment the Ugee 19" seems like my best bet for an art-related gift.